Common Pests
Insects, Mites, Mollusks, and Nematodes
| Common name | Scientific name | Family | Order |
|---|---|---|---|
| Acacia psyllid | Acizzia uncatoides | Psyllidae | Hemiptera |
| Acorn moth | Valentinia glandulella | Coleophoridae | Lepidoptera |
| Adelgid | Adelges sp. | Adelgidae | Hemiptera |
| Adelgid | Pineus sp. | Adelgidae | Hemiptera |
| American cockroach | Periplaneta americana | Blatellidae | Orthoptera |
| American plum borer | Euzophera semifuneralis | Pyralidae | Lepidoptera |
| Amorbia | Amorbia cuneana | Tortricidae | Lepidoptera |
| Ant | various spp. | various | Hymenoptera |
| Ant, Argentine | Linepithema humile | Formicidae | Hymenoptera |
| Ant, Carpenter | Camponotus sp. | Formicidae | Hymenoptera |
| Ant, Odorous house | Tapinoma sessile | Formicidae | Hymenoptera |
| Ant, Pavement | Tetramorium caespitum | Formicidae | Hymenoptera |
| Ant, Pharaoh | Monomorium pharaonis | Formicidae | Hymenoptera |
| Ant, Red imported fire | Solenopsis invicta | Formicidae | Hymenoptera |
| Ant, Southern fire | Solenopsis xyloni | Formicidae | Hymenoptera |
| Ant, Thief | Solenopsis molesta | Formicidae | Hymenoptera |
| Ant, Velvety tree | Liometopum occidentale | Formicidae | Hymenoptera |
| Aphid | various spp. | Aphididae | Hemiptera |
| Aphid, Gall | Pemphigius sp. | Aphididae | Hemiptera |
| Aphid, Gall | Tamalia coweni | Aphididae | Hemiptera |
| Aphid, Woolly apple | Eriosoma lanigerum | Aphididae | Hemiptera |
| Aphid, Woolly hackberry | Shivaphis celti | Aphididae | Hemiptera |
| Apple maggot | Rhagoletis pomonella | Tephritidae | Diptera |
| Apple pandemis leafroller | Pandemis pyrusana | Tortricidae | Lepidoptera |
| Argentine ant | Linepithema humile | Formicidae | Hymenoptera |
| Armyworm | Spodoptera sp. | Noctuidae | Lepidoptera |
| Armyworm and cutworm (lawns) | various spp. | Noctuidae | Lepidoptera |
| Artichoke plume moth | Platyptilia carduidactyla | Pterophoridae | Lepidoptera |
| Ash Borer | Podosesia syringae | Sesiidae | Lepidoptera |
| Asian citrus psyllid | Diaphorina citri | Psyllidae | Hemiptera |
| Asian longhorned beetle | Anoplophora glabripennis | Cerambycidae | Coleoptera |
| Asparagus beetle | Crioceris sp. | Chrysomelidae | Coleoptera |
| Ataenius, Black turfgrass | Ataenius spretulus | Scarabaeidae | Coleoptera |
| Avocado brown mite | Oligonychus punicae | Tetranychidae | Acari |
| Avocado lace bug | Pseudacysta perseae | Tingidae | Hemiptera |
| Avocado thrips | Scirtothrips perseae | Thripidae | Thysanoptera |
| Baccharis gall fly | Rhopalomyia californica | Cecidomyiidae | Diptera |
| Bagrada bug | Bagrada hilaris | Pentatomidae | Hemiptera |
| Banana moth | Opogona sacchari | Tineidae | Lepidoptera |
| Banded slug | Lehmannia poirieri | Limacidae | Stylommatophora |
| Bark beetle | various spp. | various | Coleoptera |
| Bean thrips | Caliothrips fasciatus | Thripidae | Thysanoptera |
| Bean weevil | various spp. | Curculionidae | Coleoptera |
| Bed bug | Cimex lectularius | Cimicidae | Hemiptera |
| Bee stings | various spp. | Apidae | Hymenoptera |
| Bee swarms | Apis sp. | Apidae | Hymenoptera |
| Bee, Carpenter | Xylocopa sp. | Apidae | Hymenoptera |
| Bee, Leafcutting | Megachile sp. | Megachilidae | Hymenoptera |
| Beetle, Asian longhorned | Anoplophora glabripennis | Cerambycidae | Coleoptera |
| Beetle, Asparagus | Crioceris sp. | Chrysomelidae | Coleoptera |
| Beetle, Bark | various spp. | various | Coleoptera |
| Beetle, California willow leaf | Plagiodera californica | Chrysomelidae | Coleoptera |
| Beetle, Carpet | Anthrenus sp. | Dermestidae | Coleoptera |
| Beetle, Carpet | Attagenus unicolor | Dermestidae | Coleoptera |
| Beetle, Carrot | Tomarus (=Ligyrus) gibbosus | Scarabaeidae | Coleoptera |
| Beetle, Cigarette | Lasioderma serricorne | Anobiidae | Coleoptera |
| Beetle, Confused flour | Tribolium confusum | Tenebrionidae | Coleoptera |
| Beetle, Cucumber | various spp. | Chrysomelidae | Coleoptera |
| Beetle, Darkling | various spp. | Tenebrionidae | Coleoptera |
| Beetle, Dichondra flea | Chaetocnema repens | Chrysomelidae | Coleoptera |
| Beetle, Driedfruit | Carpophilus sp. | Nitidulidae | Coleoptera |
| Beetle, Drugstore | Stegobium paniceum | Anobiidae | Coleoptera |
| Beetle, Elm leaf | Xanthogaleruca (=Pyrrhalta) luteola | Chrysomelidae | Coleoptera |
| Beetle, Eucalyptus snout | Gonipterus scutellatus | Curculionidae | Coleoptera |
| Beetle, Eucalyptus tortoise | Chrysophtharta m-fusca | Chrysomelidae | Coleoptera |
| Beetle, Eucalyptus tortoise | Trachymela sloanei | Chrysomelidae | Coleoptera |
| Beetle, Flea | various spp. | Chrysomelidae | Coleoptera |
| Beetle, Fuller rose | Naupactus (=Asynonychus) godmani | Curculionidae | Coleoptera |
| Beetle, Grape bud | Glyptoscelis squamulata | Chrysomelidae | Coleoptera |
| Beetle, Green fruit | Cotinis mutabilis | Scarabaeidae | Coleoptera |
| Beetle, Hoplia | Hoplia callipyge | Scarabaeidae | Coleoptera |
| Beetle, Klamathweed | Chrysolina quadrigemina | Chrysomelidae | Coleoptera |
| Beetle, Red flour | Tribolium castaneum | Tenebrionidae | Coleoptera |
| Beetle, Sap | Carpophilus sp. | Nitidulidae | Coleoptera |
| Beetle, Sawtoothed grain | Oryzaephilus surinamensis | Silvanidae | Coleoptera |
| Beetle, Tumbling flower | Mordella spp. | Mordellidae | Coleoptera |
| Beetle, Twig | Pithyophorus spp. | Curculionidae | Coleoptera |
| Beetle, Walnut twig | Pityophthorus juglandis | Curculionidae | Coleoptera |
| Beetle, Warehouse | Trogoderma variabile | Bostrichidae | Coleoptera |
| Beetle, wood boring in homes | various spp. | various | Coleoptera |
| Bermudagrass mite | Eriophyes cynodoniensis | Eriophyidae | Acari |
| Billbug | Sphenophorus sp. | Curculionidae | Coleoptera |
| Black scale | Saissetia oleae | Coccidae | Hemiptera |
| Black turfgrass ataenius | Ataenius spretulus | Scarabaeidae | Coleoptera |
| Black vine weevil | Otiorhynchus sulcatus | Curculionidae | Coleoptera |
| Black widow spider | Latrodectus sp. | Theridiidae | Araneae |
| Blister mite on ornamentals | various spp. | Eriophyidae | Acari |
| Borer, American plum | Euzophera semifuneralis | Pyralidae | Lepidoptera |
| Borer, Ash | Podosesia syringae | Sesiidae | Lepidoptera |
| Borer, Branch & twig (grape) | Melalgus (=Polycaon) confertus | Bostrichidae | Coleoptera |
| Borer, Eucalyptus longhorned | Phoracantha sp. | Cerambycidae | Coleoptera |
| Borer, Flatheaded | various spp. | Buprestidae | Coleoptera |
| Borer, Goldspotted oak | Agrilus auroguttatus | Buprestidae | Coleoptera |
| Borer, Lead cable | Scobicia declivis | Bostrichidae | Coleoptera |
| Borer, Longhorned | various spp. | Cerambycidae | Coleoptera |
| Borer, Lycaenid pod | various spp. | Lycaenidae | Lepidoptera |
| Borer, Pacific flatheaded | Chrysobothris malis | Buprestidae | Coleoptera |
| Borer, Peach twig | Anarsia lineatella | Gelechiidae | Lepidoptera |
| Borer, Peachtree | Synanthedon exitiosa | Sesiidae | Lepidoptera |
| Borer, Poplar and willow | Cryptorhynchus lapathi | Curculionidae | Coleoptera |
| Borer, Raspberry crown | Pennisetia marginata | Sesiidae | Lepidoptera |
| Borer, Roundheaded | various spp. | Cerambycidae | Coleoptera |
| Borer, Shothole | Scolytus rugulosus | Curculionidae | Coleoptera |
| Borer, Sycamore | Synanthedon resplendens | Sesiidae | Lepidoptera |
| Bougainvillea looper | Disclisioprocta stellata | Geometridae | Lepidoptera |
| Boxelder bug | Boisea rubrolineata | Rhopalidae | Hemiptera |
| Boxwood leafminer | Monarthropalpus flavus | Cecidomyiidae | Diptera |
| Branch & twig borer (grape) | Melalgus (=Polycaon) confertus | Bostrichidae | Coleoptera |
| Branch borer (trees & shrubs) | various spp. | Bostrichidae | Coleoptera |
| Bristly roseslug | Cladius difformis | Tenthredinidae | Hymenoptera |
| Broad mite | Polyphagotarsonemus latus | Tarsonemidae | Acari |
| Brown apricot scale | Parthenolecanium corni | Coccidae | Hemiptera |
| Brown garden snail | Cornu (=Helix) aspersum | Helicidae | Stylommatophora |
| Brown marmorated stink bug | Halyomorpha halys | Pentatomidae | Hemiptera |
| Brown mite | Bryobia rubrioculus | Tetranychidae | Acari |
| Brown recluse spider (& others) | Loxosceles sp. | Sicariidae | Araneae |
| Brown soft scale | Coccus hesperidum | Coccidae | Hemiptera |
| Brownbanded cockroach | Supella longipalpa | Blatellidae | Orthoptera |
| Buffalo treehopper | Stictocephala bisonia | Cicadellidae | Hemiptera |
| Bug (True bugs) | various spp. | various | Hemiptera |
| Bug, Bagrada | Bagrada hilaris | Pentatomidae | Hemiptera |
| Bug, Bed | Cimex lectularius | Cimicidae | Hemiptera |
| Bug, Boxelder | Boisea rubrolineata | Rhopalidae | Hemiptera |
| Bug, Brown marmorated stink | Halyomorpha halys | Pentatomidae | Hemiptera |
| Bug, Conenose | Triatoma protracta | Reduviidae | Hemiptera |
| Bug, False chinch | Nysius raphanus | Lygaeidae | Hemiptera |
| Bug, Harlequin | Murgantia histrionica | Pentatomidae | Hemiptera |
| Bug, Lygus | Lygus hesperus | Miridae | Hemiptera |
| Bug, Southern Chinch | Blissus insularis | Blissidae | Hemiptera |
| Bug, Squash | Anasa tristis | Coreidae | Hemiptera |
| Bug, Stink | various spp. | Pentatomidae | Hemiptera |
| Bulb mite | various spp. | Acaridae | Acari |
| Cabbage maggot | Delia radicum | Anthomyiidae | Diptera |
| Cabbageworm, Imported | Pieris rapae | Pieridae | Lepidoptera |
| Calico scale | Eulecanium cerasorum | Coccidae | Hemiptera |
| California oakworm | Phryganidia californica | Dioptidae | Lepidoptera |
| California pear sawfly | Pristiphora abbreviata | Tenthredinidae | Hymenoptera |
| California red scale | Aonidiella aurantii | Diaspididae | Hemiptera |
| California willow leaf beetle | Plagiodera californica | Chrysomelidae | Coleoptera |
| Cankerworm, Fall | Alsophila pometaria | Geometridae | Lepidoptera |
| Carpenter ant | Camponotus sp. | Formicidae | Hymenoptera |
| Carpenter bee | Xylocopa sp. | Apidae | Hymenoptera |
| Carpenterworm | Prionoxystus robiniae | Cossidae | Lepidoptera |
| Carpet beetle | Anthrenus sp. | Dermestidae | Coleoptera |
| Carpet beetle | Attagenus unicolor | Dermestidae | Coleoptera |
| Carrot beetle | Tomarus (=Ligyrus) gibbosus | Scarabaeidae | Coleoptera |
| Carrot rust fly | Psila rosae | Psilidae | Diptera |
| Casemaker | Bucculatrix spp. | Bucculatricidae | Lepidoptera |
| Ceanothus stem gall moth | Periploca ceanothiella | Cosmopterigidae | Lepidoptera |
| Centipedes | various spp. | various | various |
| Chafer, Masked | Cyclocephala sp. | Scarabaeidae | Coleoptera |
| Cherry leafhopper | Fieberiella florii | Cicadellidae | Hemiptera |
| Cherry slug | Caliroa cerasi | Tenthredinidae | Hymenoptera |
| Chinch bug, False | Nysius raphanus | Lygaeidae | Hemiptera |
| Chinch bug, Southern | Blissus insularis | Blissidae | Hemiptera |
| Cigarette beetle | Lasioderma serricorne | Anobiidae | Coleoptera |
| Citricola scale | Coccus pseudomagnoliarum | Coccidae | Hemiptera |
| Citrus bud mite | Eriophyes sheldoni | Eriophyidae | Acari |
| Citrus cutworm | Egira (=Xylomyges) curialis | Noctuidae | Lepidoptera |
| Citrus leafminer | Phyllocnistis citrella | Gracillariidae | Lepidoptera |
| Citrus mealybug | Planococcus citri | Pseudococcidae | Hemiptera |
| Citrus red mite | Panonychus citri | Tetranychidae | Acari |
| Citrus root weevil | Diaprepes abbreviatus | Curculionidae | Coleoptera |
| Citrus rust mite (Silver mite) | Phyllocoptruta oleivora | Eriophyidae | Acari |
| Citrus thrips | Scirtothrips citri | Thripidae | Thysanoptera |
| Clearwing moth | various spp. | Sesiidae | Hemiptera |
| Climbing cutworm | various spp. | various | Lepidoptera |
| Clothes moth, casemaking | Tinea pellionella | Tineidae | Lepidoptera |
| Clothes moth, webbing | Tineola bisselliella | Tineidae | Lepidoptera |
| Cockroach | various spp. | Blatellidae | Orthoptera |
| Cockroach, American | Periplaneta americana | Blatellidae | Orthoptera |
| Cockroach, Brownbanded | Supella longipalpa | Blatellidae | Orthoptera |
| Cockroach, Field | Blattella vaga | Blatellidae | Orthoptera |
| Cockroach, German | Blattella germanica | Blatellidae | Orthoptera |
| Cockroach, Oriental | Blatta orientalis | Blatellidae | Orthoptera |
| Cockroach, Smokybrown | Periplaneta fuliginosa | Blatellidae | Orthoptera |
| Cockroach, Turkestan | Blatta lateralis | Blatellidae | Orthoptera |
| Codling moth | Cydia pomonella | Tortricidae | Lepidoptera |
| Conenose bug | Triatoma protracta | Reduviidae | Hemiptera |
| Confused flour beetle | Tribolium confusum | Tenebrionidae | Coleoptera |
| Conifer sawfly | Neodiprion spp. | Diprionidae | Hymenoptera |
| Corn earworm | Helicoverpa zea | Noctuidae | Lepidoptera |
| Cottony cushion scale | Icerya purchasi | Margarodidae | Hemiptera |
| Crane fly | Tipula paludosa | Tipulidae | Diptera |
| Cribrate weevil | Otiorhynchus cribricollis | Curculionidae | Coleoptera |
| Cricket | Gryllus sp. | Gryllidae | Orthoptera |
| Cricket, Jerusalem | Stenopelmatus fuscus | Stenopelmatidae | Orthoptera |
| Cuban laurel thrips | Gynaikothrips ficorum | Phlaeothripidae | Thysanoptera |
| Cucumber beetle | various spp. | Chrysomelidae | Coleoptera |
| Curculio, Rose | Rhynchites bicolor | Curculionidae | Coleoptera |
| Cutworm | various spp. | Noctuidae | Lepidoptera |
| Cutworm and armyworm, lawns | various spp. | Noctuidae | Lepidoptera |
| Cutworm on fruit | various spp. | â?¦ | Lepidoptera |
| Cutworm, Citrus | Egira (=Xylomyges) curialis | Noctuidae | Lepidoptera |
| Cutworm, Climbing | various spp. | â?¦ | Lepidoptera |
| Cutworm, Variegated | Peridroma saucia | Noctuidae | Lepidoptera |
| Cycad scale | Furchadaspis zamiae | Diaspididae | Hemiptera |
| Cyclamen mite | Phytonemus (=Steneotarsonemus) pallidus | Tarsonemidae | Acari |
| Cypress bark mealybug | Ehrhornia cupressi | Pseudococcidae | Hemiptera |
| Cypress bark moth | Cydia (=Laspeyresia) cupressana | Tortricidae | Lepidoptera |
| Cypress bark moth | Epinotia hopkinsana | Tortricidae | Lepidoptera |
| Cypress bark scale | Ehrhornia cupressi | Pseudococcidae | Hemiptera |
| Dampwood termite | Zootermopsis spp. | Termopsidae | Isoptera |
| Darkling beetle | various spp. | Tenebrionidae | Coleoptera |
| Diamondback moth | Plutella xylostella | Plutellidae | Lepidoptera |
| Diaprepes root weevil | Diaprepes abbreviatus | Curculionidae | Coleoptera |
| Dichondra flea beetle | Chaetocnema repens | Chrysomelidae | Coleoptera |
| Douglas-fir pitch moth | Synanthedon novaroensis | Sesiidae | Lepidoptera |
| Douglas-fir twig weevil | Cylindrocopturus furnissi | Curculionidae | Coleoptera |
| Drain fly | Pyschoda spp. | Pyschodidae | Diptera |
| Drain fly | Telmatoscopus spp. | Pyschodidae | Diptera |
| Driedfruit beetle | Carpophilus sp. | Nitidulidae | Coleoptera |
| Drosophila, spotted wing | Drosophila suzukii | Drosophilidae | Diptera |
| Drugstore beetle | Stegobium paniceum | Anobiidae | Coleoptera |
| Dryberry mite | Phyllocoptes gracilis | Eriophyidae | Acari |
| Drywood termite | Incisitermes minor | Kalotermitidae | Isoptera |
| Earthworm | Lumbricus terrestris | Lumbricidae | Haplotaxida |
| Earwig | Forficula auricularia | Forficulidae | Dermaptera |
| Earworm, Corn | Helicoverpa zea | Noctuidae | Lepidoptera |
| Elm leaf beetle | Xanthogaleruca (=Pyrrhalta) luteola | Chrysomelidae | Coleoptera |
| Eucalyptus longhorned borer | Phoracantha sp. | Cerambycidae | Coleoptera |
| Eucalyptus redgum lerp psyllid | Glycaspis brimblecombei | Psyllidae | Hemiptera |
| Eucalyptus snout beetle | Gonipterus scutellatus | Curculionidae | Coleoptera |
| Eucalyptus tortoise beetle | Chrysophtharta m-fusca | Chrysomelidae | Coleoptera |
| Eucalyptus tortoise beetle | Trachymela sloanei | Chrysomelidae | Coleoptera |
| Eugenia psyllid | Trioza eugeniae | Psyllidae | Hemiptera |
| Euonymus scale | Unaspis euonymi | Diaspididae | Hemiptera |
| European elm scale | Gossyparia spuria | Eriococcidae | Hemiptera |
| European fruit lecanium | Parthenolecanium corni | Coccidae | Hemiptera |
| European grapevine moth | Lobesia botrana | Tortricidae | Lepidoptera |
| European red mite | Panonychus ulmi | Tetranychidae | Acari |
| Eye gnat | Hippelates spp. | Chloropidae | Diptera |
| Eye gnat | Liohippelates spp. | Chloropidae | Diptera |
| Face fly | Musca autumnalis | Muscidae | Diptera |
| Fall cankerworm | Alsophila pometaria | Geometridae | Lepidoptera |
| Fall webworm | Hyphantria cunea | Erebidae | Lepidoptera |
| False chinch bug | Nysius raphanus | Lygaeidae | Hemiptera |
| Field cockroach | Blattella vaga | Blatellidae | Orthoptera |
| Fiery skipper | Hylephila phyleus | Hesperiidae | Lepidoptera |
| Filbert weevil | Curculio occidentis | Curculionidae | Coleoptera |
| Filbertworm | Cydia latiferreana | Tortricidae | Lepidoptera |
| Fire ant, Red imported | Solenopsis invicta | Formicidae | Hymenoptera |
| Fire ant, Southern | Solenopsis xyloni | Formicidae | Hymenoptera |
| Firebrat | Thermobia domestica | Lepismatidae | Thysanura |
| Flatheaded borer | Agrilus sp. | Buprestidae | Coleoptera |
| Flatheaded borer | Chrysobothris sp. | Buprestidae | Coleoptera |
| Flea | Ctenocephalides felis | Pulicidae | Siphonaptera |
| Flea beetle | various spp. | Chrysomelidae | Coleoptera |
| Flea beetle, Dichondra | Chaetocnema repens | Chrysomelidae | Coleoptera |
| Flies | various spp. | various | Diptera |
| Fly, Carrot rust | Psila rosae | Psilidae | Diptera |
| Fly, Crane | Tipula paludosa | Tipulidae | Diptera |
| Fly, Drain | Pyschoda spp. | Pyschodidae | Diptera |
| Fly, Drain | Telmatoscopus spp. | Pyschodidae | Diptera |
| Fly, Face | Musca autumnalis | Muscidae | Diptera |
| Fly, Fruit | Drosophila sp. | Drosophilidae | Diptera |
| Fly, Garbage | Phaenicia spp. | Calliphoridae | Diptera |
| Fly, House | Musca domestica | Muscidae | Diptera |
| Fly, Lesser bulb | Eumerus spp. | Syrphidae | Diptera |
| Fly, Little house | Fannia canicularis | Muscidae | Diptera |
| Fly, Moth | Pyschoda spp. | Pyschodidae | Diptera |
| Fly, Moth | Telmatoscopus spp. | Pyschodidae | Diptera |
| Fly, Narcissus bulb | Merodon equestris | Syrphidae | Diptera |
| Fly, Olive fruit | Bactrocera oleae | Tephritidae | Diptera |
| Fly, Shore | Scatella stagnalis | Ephydridae | Diptera |
| Fly, Stable | Stomoxys calcitrans | Muscidae | Diptera |
| Fly, Vinegar | Drosophila sp. | Drosophilidae | Diptera |
| Fly, Walnut husk | Rhagoletis completa | Tephritidae | Diptera |
| Foliage miner (woody ornamentals) | various spp. | various | Lepidoptera |
| Frosted scale | Parthenolecanium pruinosum | Coccidae | Hemiptera |
| Fruit fly | Drosophila sp. | Drosophilidae | Diptera |
| Fruit fly, Olive | Bactrocera oleae | Tephritidae | Diptera |
| Fruittree leafroller | Archips argyrospila | Tortricidae | Lepidoptera |
| Fruitworm, Green | various spp. | Noctuidae | Lepidoptera |
| Fruitworm, Tomato | Helicoverpa zea | Noctuidae | Lepidoptera |
| Fuchsia gall mite | Aculops fuchsiae | Eriophyidae | Acari |
| Fuller rose beetle | Naupactus (=Asynonychus) godmani | Curculionidae | Coleoptera |
| Fungus gnat | Bradysia spp. | Sciaridae | Diptera |
| Fungus gnat | Orfelia spp. | Sciaridae | Diptera |
| Gall and blister mite | various spp. | Eriophyidae | Acari |
| Gall and bud mite | various spp. | Eriophyidae | Acari |
| Gall aphid | Pemphigius sp. | Aphididae | Hemiptera |
| Gall aphid | Tamalia coweni | Aphididae | Hemiptera |
| Gall fly, Baccharis | Rhopalomyia californica | Cecidomyiidae | Diptera |
| Gall maker | various spp. | various | various |
| Gall midge | various spp. | Cecidomyiidae | Diptera |
| Gall midge, Honeylocust pod | Dasineura gleditschiae | Cecidomyiidae | Diptera |
| Gall mite on ornamentals | various spp. | Eriophyidae | Acari |
| Gall moth, Ceanothus | Periploca ceanothiella | Cosmopterigidae | Lepidoptera |
| Gall wasp, Twohorned oak | Dryocosmus dubiosus | Cynipidae | Hymenoptera |
| Garbage fly | Phaenicia spp. | Calliphoridae | Diptera |
| Garden symphylan | Scutigerella immaculata | Scutigerellidae | Symphyla |
| German cockroach | Blattella germanica | Blatellidae | Orthoptera |
| Giant whitefly | Aleurodicus dugesii | Aleyrodidae | Hemiptera |
| Gilli mealybug | Ferrisia gilli | Pseudococcidae | Hemiptera |
| Glassy-winged Sharpshooter | Homalodisca vitripennis | Cicadellidae | Hemiptera |
| Gnat, Eye | Hippelates spp. | Chloropidae | Diptera |
| Gnat, Eye | Liohippelates spp. | Chloropidae | Diptera |
| Gnat, Fungus | Bradysia spp. | Sciaridae | Diptera |
| Gnat, Fungus | Orfelia spp. | Sciaridae | Diptera |
| Goldspotted oak borer | Agrilus auroguttatus | Buprestidae | Coleoptera |
| Grape bud beetle | Glyptoscelis squamulata | Chrysomelidae | Coleoptera |
| Grape erineum mite | Colomerus vitis | Eriophyidae | Acari |
| Grape leaffolder | Desmia funeralis | Crambidae | Lepidoptera |
| Grape leafhopper | Erythroneura spp. | Cicadellidae | Hemiptera |
| Grape mealybug | Pseudococcus maritimus | Pseudococcidae | Hemiptera |
| Grape phylloxera | Daktulosphaira vitifoliae | Phylloxeridae | Hemiptera |
| Grapeleaf skeletonizer, Western | Harrisina brillians | Zygaenidae | Lepidoptera |
| Grapevine moth, European | Lobesia botrana | Tortricidae | Lepidoptera |
| Grasshopper | various spp. | Acrididae | Orthoptera |
| Gray garden slug | Deroceras reticulatum | Agriolimacidae | Stylommatophora |
| Greedy scale | Hemiberlesia rapax | Diaspididae | Hemiptera |
| Green fruit beetle | Cotinis mutabilis | Scarabaeidae | Coleoptera |
| Green fruitworm | various spp. | Noctuidae | Lepidoptera |
| Green fruitworm, humped | Amphipyra pyramidoides | Noctuidae | Lepidoptera |
| Green fruitworm, speckled | Orthosia hibisci | Noctuidae | Lepidoptera |
| Green shield scale | Pulvinaria psidii | Coccidae | Hemiptera |
| Greenhouse slug | Milax gagates | Milacidae | Stylommatophora |
| Greenhouse thrips | Heliothrips haemorrhoidalis | Thripidae | Thysanoptera |
| Ground mealybug | Rhizoecus spp. | Pseudococcidae | Hemiptera |
| Grub, White | Cyclocephala sp. | Scarabaeidae | Coleoptera |
| Hackberry woolly aphid | Shivaphis celti | Aphididae | Hemiptera |
| Harlequin bug | Murgantia histrionica | Pentatomidae | Hemiptera |
| Head lice | Pediculus humanus capitis | Pediculidae | Phthiraptera |
| Hobo spider | Tegenaria agrestis | Agelenidae | Araneae |
| Honeylocust pod gall midge | Dasineura gleditschiae | Cecidomyiidae | Diptera |
| Hoplia beetle | Hoplia callipyge | Scarabaeidae | Coleoptera |
| Horntail or wood wasp | various spp. | Siricidae | Hymenoptera |
| Hornworm | Manduca sp. | Sphingidae | Lepidoptera |
| Horsehair worm | various spp. | various | Gordioida |
| House fly | Musca domestica | Muscidae | Diptera |
| Imported cabbageworm | Pieris rapae | Pieridae | Lepidoptera |
| Indian walking stick | Carausius morosus | Diapheromeridae | Phasmatodea |
| Indianmeal moth | Plodia interpunctella | Pyralidae | Lepidoptera |
| Irregular pine scale | Toumeyella pinicola | Coccidae | Hemiptera |
| Jerusalem cricket | Stenopelmatus fuscus | Stenopelmatidae | Orthoptera |
| Juniper twig girdler | Periploca nigra | Cosmopterigidae | Lepidoptera |
| Katydid | Microcentum retinerve | Tettigoniidae | Orthoptera |
| Katydid | Scudderia furcata | Tettigoniidae | Orthoptera |
| Klamathweed beetle | Chrysolina quadrigemina | Chrysomelidae | Coleoptera |
| Kuno scale | Eulecanium kunoense | Coccidae | Hemiptera |
| Lace bug | various spp. | Tingidae | Hemiptera |
| Lace bug, Avocado | Pseudacysta perseae | Tingidae | Hemiptera |
| Latania scale | Hemiberlesia lataniae | Diaspididae | Hemiptera |
| Lawn moth and sod webworm | various spp. | Crambidae | Lepidoptera |
| Lead cable borer | Scobicia declivis | Bostrichidae | Coleoptera |
| Leafcutting bee | Megachile sp. | Megachilidae | Hymenoptera |
| Leaffolder, Grape | Desmia funeralis | Crambidae | Lepidoptera |
| Leaffooted bug | Leptoglossus zonatus | Pentatomidae | Hemiptera |
| Leaffooted bug | Leptoglossus clypealis | Pentatomidae | Hemiptera |
| Leaffooted bug | Leptoglossus occidentalis | Pentatomidae | Hemiptera |
| Leafhopper, Cherry | Fieberiella florii | Cicadellidae | Hemiptera |
| Leafhopper, flowers | various spp. | Cicadellidae | Hemiptera |
| Leafhopper, Grape | Erythroneura spp. | Cicadellidae | Hemiptera |
| Leafhopper (lawns) | Deltacephalus sonorus | Cicadellidae | Hemiptera |
| Leafhopper (lawns) | Draeculacephala minerva | Cicadellidae | Hemiptera |
| Leafhopper, Mountain | Colladonus montanus | Cicadellidae | Hemiptera |
| Leafhopper (trees and shrubs) | various spp. | Cicadellidae | Hemiptera |
| Leafhopper (vegetables and fruit) | various spp. | Cicadellidae | Hemiptera |
| Leafminer, Boxwood | Monarthropalpus flavus | Cecidomyiidae | Diptera |
| Leafminer, Citrus | Phyllocnistis citrella | Gracillariidae | Lepidoptera |
| Leafminer, flowers | Liriomyza sp. | Agromyzidae | Diptera |
| Leafminer, Tentiform | Phyllonorycter sp. | Gracillariidae | Lepidoptera |
| Leafroller | various spp. | Tortricidae | Lepidoptera |
| Leafroller, Apple pandemis | Pandemis pyrusana | Tortricidae | Lepidoptera |
| Leafroller, Fruittree | Archips argyrospila | Tortricidae | Lepidoptera |
| Leafroller, Garden tortrix | Ptycholoma peritana | Tortricidae | Lepidoptera |
| Leafroller, Obliquebanded | Choristoneura rosaceana | Tortricidae | Lepidoptera |
| Leafroller, Omnivorous | Platynota stultana | Tortricidae | Lepidoptera |
| Leafroller, Strawberry | Ancylus comptana fragariae | Tortricidae | Lepidoptera |
| Lesser bulb fly | Eumerus spp. | Syrphidae | Diptera |
| Lice, Head | Pediculus humanus capitis | Pediculidae | Phthiraptera |
| Light brown apple moth | Epiphyas postvittana | Tortricidae | Lepidoptera |
| Little house fly | Fannia canicularis | Muscidae | Diptera |
| Longhorned borer | various spp. | Cerambycidae | Coleoptera |
| Longtailed mealybug | Pseudococcus longispinus | Pseudococcidae | Hemiptera |
| Looper | various spp. | various | Lepidoptera |
| Looper, Bougainvillea | Disclisioprocta stellata | Geometridae | Lepidoptera |
| Looper, Omnivorous | Sabulodes aegrotata | Geometridae | Lepidoptera |
| Lycaenid pod borer | various spp. | Lycaenidae | Lepidoptera |
| Lygus bug | Lygus hesperus | Miridae | Hemiptera |
| Maggot, Apple | Rhagoletis pomonella | Tephritidae | Diptera |
| Maggot, Cabbage | Delia radicum | Anthomyiidae | Diptera |
| Maggot, Onion | Delia antigua | Anthomyiidae | Diptera |
| Maggot, Raspberry cane | Pegomya rubivora | Anthomyiidae | Diptera |
| Maggot, Seedcorn | Delia platura | Anthomyiidae | Diptera |
| Masked chafer | Cyclocephala sp. | Scarabaeidae | Coleoptera |
| Mealybug | various spp. | Pseudococcidae | Hemiptera |
| Mealybug, citrus | Planococcus citri | Pseudococcidae | Hemiptera |
| Mealybug, Cypress bark | Ehrhornia cupressi | Pseudococcidae | Hemiptera |
| Mealybug, Gilli (Gill's) | Ferrisia gilli | Pseudococcidae | Hemiptera |
| Mealybug, Grape | Pseudococcus maritimus | Pseudococcidae | Hemiptera |
| Mealybug, Ground | Rhizoecus spp. | Pseudococcidae | Hemiptera |
| Mealybug, Longtailed | Pseudococcus longispinus | Pseudococcidae | Hemiptera |
| Mealybug, Obscure | Pseudococcus affinis | Pseudococcidae | Hemiptera |
| Midge, Gall | various spp. | Cecidomyiidae | Diptera |
| Midge, Honeylocust pod gall | Dasineura gleditschiae | Cecidomyiidae | Diptera |
| Midge, Monterey pine | Thecodiplosis piniradiatae | Cecidomyiidae | Diptera |
| Midge, Needle and twig | Contarinia sp. | Cecidomyiidae | Diptera |
| Millipede | various spp. | various | various |
| Minute cypress scale | Carulaspis minima | Diaspididae | Hemiptera |
| Mite, Avocado brown | Oligonychus punicae | Tetranychidae | Acari |
| Mite, Bermudagrass | Eriophyes cynodoniensis | Eriophyidae | Acari |
| Mite, Broad | Polyphagotarsonemus latus | Tarsonemidae | Acari |
| Mite, Brown | Bryobia rubrioculus | Tetranychidae | Acari |
| Mite, bulb | various spp. | Acaridae | Acari |
| Mite, Citrus bud | Eriophyes sheldoni | Eriophyidae | Acari |
| Mite, Citrus red | Panonychus citri | Tetranychidae | Acari |
| Mite, Citrus rust | Phyllocoptruta oleivora | Eriophyidae | Acari |
| Mite, Cyclamen | Phytonemus pallidus | Tarsonemidae | Acari |
| Mite, Dryberry | Phyllocoptes gracilis | Eriophyidae | Acari |
| Mite, European red | Panonychus ulmi | Tetranychidae | Acari |
| Mite, Fuchsia gall | Aculops fuchsiae | Eriophyidae | Acari |
| Mite, gall or blister (ornamentals) | various spp. | Eriophyidae | Acari |
| Mite, Gall or bud | various spp. | Eriophyidae | Acari |
| Mite, Grape erineum | Colomerus vitis | Eriophyidae | Acari |
| Mite, Pear rust | Epitrimerus pyri | Eriophyidae | Acari |
| Mite, Pearleaf blister | Phytoptus pyri | Phytoptidae | Acari |
| Mite, Persea | Oligonychus perseae | Tetranychidae | Acari |
| Mite, Redberry | Acalitus essigi | Eriophyidae | Acari |
| Mite, Silver | Phyllocoptruta oleivora | Eriophyidae | Acari |
| Mite, Sixspotted | Eotetranychus sexmaculatus | Tetranychidae | Acari |
| Mite, Spider | various spp. | Tetranychidae | Acari |
| Mite, Spinach crown | Rhizoglyphus sp. | Acaridae | Acari |
| Mite, Tomato russet | Aculops lycopersici | Eriophyidae | Acari |
| Mite, Wheat curl | Eriophyes tulipae | Eriophyidae | Acari |
| Monterey cypress scale | Xylococculus macrocarpae | Margarodidae | Hemiptera |
| Monterey pine bud moth | Exoteleia burkei | Gelechiidae | Lepidoptera |
| Monterey pine midge | Thecodiplosis piniradiatae | Cecidomyiidae | Diptera |
| Mosquitoes | various spp. | Culicidae | Diptera |
| Moth fly | Pyschoda spp. | Pyschodidae | Diptera |
| Moth fly | Telmatoscopus spp. | Pyschodidae | Diptera |
| Mountain leafhopper | Colladonus montanus | Cicadellidae | Hemiptera |
| Myoporum thrips | Klambothrips myopori | Phlaeothripidae | Thysanoptera |
| Narcissus bulb fly | Merodon equestris | Syrphidae | Diptera |
| Navel orangeworm | Amyelois transitella | Pyralidae | Lepidoptera |
| Needle and twig midge | Contarinia sp. | Cecidomyiidae | Diptera |
| Nematode | various spp. | various | Tylenchida |
| Nematode, Pinewood | Bursaphelenchus xylophilus | Parasitaphelenchidae | Aphelenchida |
| Oak leaf phylloxera | Phylloxera sp. | Phylloxeridae | Hemiptera |
| Oak pit scale | Asterolecanium sp. | Asterolecaniidae | Hemiptera |
| Oakworm, California | Phryganidia californica | Dioptidae | Lepidoptera |
| Obliquebanded Leafroller | Choristoneura rosaceana | Tortricidae | Lepidoptera |
| Obscure mealybug | Pseudococcus affinis | Pseudococcidae | Hemiptera |
| Obscure root weevil | Sciopithes obscurus | Curculionidae | Coleoptera |
| Obscure scale | Melanaspis obscura | Diaspididae | Hemiptera |
| Odorous house ant | Tapinoma sessile | Formicidae | Hymenoptera |
| Oleander scale | Aspidiotus nerii | Diaspididae | Hemiptera |
| Olive fruit fly | Bactrocera oleae | Tephritidae | Diptera |
| Olive psyllid | Euphyllura olivina | Psyllidae | Hemiptera |
| Olive scale | Parlatoria oleae | Diaspididae | Hemiptera |
| Omnivorous leafroller | Platynota stultana | Tortricidae | Lepidoptera |
| Omnivorous looper | Sabulodes aegrotata | Geometridae | Lepidoptera |
| Onion maggot | Delia antigua | Anthomyiidae | Diptera |
| Onion thrips | Thrips tabaci | Thripidae | Thysanoptera |
| Orange leafroller (tortrix) | Argyrotaenia citrana | Tortricidae | Lepidoptera |
| Orange tortrix (leafroller) | Argyrotaenia citrana | Tortricidae | Lepidoptera |
| Orangeworm, Navel | Amyelois transitella | Pyralidae | Lepidoptera |
| Oriental cockroach | Blatta orientalis | Blatellidae | Orthoptera |
| Oriental fruit moth | Grapholita molesta | Tortricidae | Lepidoptera |
| Oystershell scale | Lepidosaphes ulmi | Diaspididae | Hemiptera |
| Pacific flatheaded borer | Chrysobothris malis | Buprestidae | Coleoptera |
| Painted lady butterfly | Vanessa cardui | Nymphalidae | Lepidoptera |
| Pavement ant | Tetramorium caespitum | Formicidae | Hymenoptera |
| Pea leaf weevil | Sitona lineata | Curculionidae | Coleoptera |
| Pea moth | Cydia nigricana | Tortricidae | Lepidoptera |
| Pea weevil | Bruchus pisorum | Curculionidae | Coleoptera |
| Peach twig borer | Anarsia lineatella | Gelechiidae | Lepidoptera |
| Peachtree borer | Synanthedon exitiosa | Sesiidae | Lepidoptera |
| Pear psylla | Psylla pyricola | Psyllidae | Hemiptera |
| Pear rust mite | Epitrimerus pyri | Eriophyidae | Acari |
| Pear slug | Caliroa cerasi | Tenthredinidae | Hymenoptera |
| Pearleaf blister mite | Phytoptus pyri | Phytoptidae | Acari |
| Pepper weevil | Anthonomus aenotinctus | Curculionidae | Coleoptera |
| Peppertree psyllid | Calophya schini | Psyllidae | Hemiptera |
| Persea mite | Oligonychus perseae | Tetranychidae | Acari |
| Pharaoh ant | Monomorium pharaonis | Formicidae | Hymenoptera |
| Phylloxera, Grape | Daktulosphaira vitifoliae | Phylloxeridae | Hemiptera |
| Phylloxera, Oak leaf | Phylloxera sp. | Phylloxeridae | Hemiptera |
| Pillbug | various spp. | various | Isopoda |
| Pine needle weevil | Scythropus sp. | Curculionidae | Coleoptera |
| Pine tip or shoot moth | Rhyacionia sp. | Tortricidae | Lepidoptera |
| Pine weevil | Pissodes sp. | Curculionidae | Coleoptera |
| Pinewood nematode | Bursaphelenchus xylophilus | Parasitaphelenchidae | Aphelenchida |
| Pinworm, tomato | Keiferia lycopersicella | Gelechiidae | Lepidoptera |
| Pitch moth | Synanthedon spp. | Sesiidae | Lepidoptera |
| Pitch moth, Douglas-fir | Synanthedon novaroensis | Sesiidae | Lepidoptera |
| Pitch moth, Sequoia | Synanthedon sequoiae | Sesiidae | Lepidoptera |
| Poplar and willow borer | Cryptorhynchus lapathi | Curculionidae | Coleoptera |
| Potato tuberworm | Phthorimaea operculella | Gelechiidae | Lepidoptera |
| Psylla, Pear | Psylla pyricola | Psyllidae | Hemiptera |
| Psyllid | various spp. | Psyllidae | Hemiptera |
| Psyllid, Asian citrus | Diaphorina citri | Psyllidae | Hemiptera |
| Psyllid, Eucalyptus redgum lerp | Glycaspis brimblecombei | Psyllidae | Hemiptera |
| Purple scale | Lepidosaphes beckii | Diaspididae | Hemiptera |
| Raspberry cane maggot | Pegomya rubivora | Anthomyiidae | Diptera |
| Raspberry crown borer | Pennisetia marginata | Sesiidae | Lepidoptera |
| Raspberry horntail sawfly | Hartigia cressoni | Cephidae | Hymenoptera |
| Raspberry sawfly | Monophadnoides geniculatus | Tenthredinidae | Hymenoptera |
| Recluse spiders | Loxosceles sp. | Sicariidae | Araneae |
| Red flour beetle | Tribolium castaneum | Tenebrionidae | Coleoptera |
| Red imported fire ant | Solenopsis invicta | Formicidae | Hymenoptera |
| Red palm weevil | Rhynchophorus ferrugineus | Curculionidae | Coleoptera |
| Redberry mite | Acalitus essigi | Eriophyidae | Acari |
| Redhumped caterpillar | Schizura concinna | Notodontidae | Lepidoptera |
| Root weevil | Otiorhynchus cribricollis | Curculionidae | Coleoptera |
| Rose curculio | Rhynchites bicolor | Curculionidae | Coleoptera |
| Roseslug, Bristly | Cladius difformis | Tenthredinidae | Hymenoptera |
| Roundheaded borer | various spp. | Cerambycidae | Coleoptera |
| Saltmarsh caterpillar | Estigmene acrea | Erebidae | Lepidoptera |
| San Jose scale | Quadraspidiotus perniciosus | Diaspididae | Hemiptera |
| Sap beetle | Carpophilus sp. | Nitidulidae | Coleoptera |
| Sawfly | various spp. | various | Hymenoptera |
| Sawfly, California pear | Pristiphora abbreviata | Tenthredinidae | Hymenoptera |
| Sawfly, Conifer | Neodiprion spp. | Diprionidae | Hymenoptera |
| Sawfly, Raspberry | Monophadnoides geniculatus | Tenthredinidae | Hymenoptera |
| Sawfly, Raspberry horntail | Hartigia cressoni | Cephidae | Hymenoptera |
| Sawfly, Willow leaf gall | Pontania pacifica | Tenthredinidae | Hymenoptera |
| Sawtoothed grain beetle | Oryzaephilus surinamensis | Silvanidae | Coleoptera |
| Scale | various spp. | various | Hemiptera |
| Scale, Black | Saissetia oleae | Coccidae | Hemiptera |
| Scale, Brown apricot | Parthenolecanium corni | Coccidae | Hemiptera |
| Scale, Brown soft | Coccus hesperidum | Coccidae | Hemiptera |
| Scale, Calico | Eulecanium cerasorum | Coccidae | Hemiptera |
| Scale, California red | Aonidiella aurantii | Diaspididae | Hemiptera |
| Scale, Citricola | Coccus pseudomagnoliarum | Coccidae | Hemiptera |
| Scale, Cottony cushion | Icerya purchasi | Margarodidae | Hemiptera |
| Scale, Cycad | Furchadaspis zamiae | Diaspididae | Hemiptera |
| Scale, Cypress bark | Ehrhornia cupressi | Pseudococcidae | Hemiptera |
| Scale, Euonymus | Unaspis euonymi | Diaspididae | Hemiptera |
| Scale, European elm | Gossyparia spuria | Eriococcidae | Hemiptera |
| Scale, European fruit lecanium | Parthenolecanium corni | Coccidae | Hemiptera |
| Scale, Frosted | Parthenolecanium pruinosum | Coccidae | Hemiptera |
| Scale, Greedy | Hemiberlesia rapax | Diaspididae | Hemiptera |
| Scale, Green shield | Pulvinaria psidii | Coccidae | Hemiptera |
| Scale, Irregular pine | Toumeyella pinicola | Coccidae | Hemiptera |
| Scale, Kuno | Eulecanium kunoense | Coccidae | Hemiptera |
| Scale, Latania | Hemiberlesia lataniae | Diaspididae | Hemiptera |
| Scale, Minute cypress | Carulaspis minima | Diaspididae | Hemiptera |
| Scale, Monterey cypress | Xylococculus macrocarpae | Margarodidae | Hemiptera |
| Scale, Oak pit | Asterolecanium sp. | Asterolecaniidae | Hemiptera |
| Scale, Obscure | Melanaspis obscura | Diaspididae | Hemiptera |
| Scale, Oleander | Aspidiotus nerii | Diaspididae | Hemiptera |
| Scale, Olive | Parlatoria oleae | Diaspididae | Hemiptera |
| Scale, Oystershell | Lepidosaphes ulmi | Diaspididae | Hemiptera |
| Scale, Purple | Lepidosaphes beckii | Diaspididae | Hemiptera |
| Scale, San Jose | Quadraspidiotus perniciosus | Diaspididae | Hemiptera |
| Scale, Sycamore | Stomacoccus platani | Margarodidae | Hemiptera |
| Scale, Tuliptree | Toumeyella liriodendri | Coccidae | Hemiptera |
| Scale, Walnut | Quadraspidiotus juglansregiae | Diaspididae | Hemiptera |
| Scale, Wax | Ceroplastes sp. | Coccidae | Hemiptera |
| Scorpion | various spp. | various | Scorpionida |
| Seedcorn maggot | Delia platura | Anthomyiidae | Diptera |
| Sequoia pitch moth | Synanthedon sequoiae | Sesiidae | Lepidoptera |
| Sharpshooter | various spp. | Cicadellidae | Hemiptera |
| Sharpshooter, Glassy-winged | Homalodisca vitripennis | Cicadellidae | Hemiptera |
| Shield bearer | Coptodisca sp. | Heliozelidae | Lepidoptera |
| Shore fly | Scatella stagnalis | Ephydridae | Diptera |
| Shothole borer | Scolytus rugulosus | Curculionidae | Coleoptera |
| Silver mite | Phyllocoptruta oleivora | Eriophyidae | Acari |
| Silverfish | Lepisma saccharina | Lepismatidae | Thysanura |
| Sixspotted mite | Eotetranychus sexmaculatus | Tetranychidae | Acari |
| Skeletonizer | Bucculatrix spp. | Bucculatricidae | Lepidoptera |
| Skeletonizer, Western grapeleaf | Harrisina brillians | Zygaenidae | Lepidoptera |
| Skipper, Fiery | Hylephila phyleus | Hesperiidae | Lepidoptera |
| Slug | various spp. | Agriolimacidae | Stylommatophora |
| Slug, Banded | Lehmannia poirieri | Limacidae | Stylommatophora |
| Slug, Gray garden | Deroceras reticulatum | Agriolimacidae | Stylommatophora |
| Slug, Greenhouse | Milax gagates | Milacidae | Stylommatophora |
| Slug, Tawny | Limacus flavus | Limacidae | Stylommatophora |
| Slug, Three-banded garden | Lehmannia valentiana | Limacidae | Stylommatophora |
| Smokybrown cockroach | Periplaneta fuliginosa | Blatellidae | Orthoptera |
| Snail | various spp. | Helicidae | Stylommatophora |
| Snail, Brown garden | Cornu (=Helix) aspersum | Helicidae | Stylommatophora |
| Snail, White garden | Theba pisana | Helicidae | Stylommatophora |
| Sod webworm | Crambus sperryellus | Crambidae | Lepidoptera |
| Southern chinch bug | Blissus insularis | Blissidae | Hemiptera |
| Southern fire ant | Solenopsis xyloni | Formicidae | Hymenoptera |
| Sowbug | various spp. | various | Isopoda |
| Sphinx moth | various spp. | Sphingidae | Lepidoptera |
| Spider | various spp. | various | Araneae |
| Spider mite | various spp. | Tetranychidae | Acari |
| Spider, Black widow | Latrodectus sp. | Theridiidae | Araneae |
| Spider, Brown recluse | Loxosceles sp. | Sicariidae | Araneae |
| Spider, Hobo | Tegenaria agrestis | Agelenidae | Araneae |
| Spider, Zoropsis | Zoropsis spinimana | Zoropsidae | Araneae |
| Spinach crown mite | Rhizoglyphus sp. | Acaridae | Acari |
| Spittlebug | various spp. | Cercopidae | Hemiptera |
| Spotted wing drosophila | Drosophila suzukii | Drosophilidae | Diptera |
| Springtail | various spp. | various | Collembola |
| Squash bug | Anasa tristis | Coreidae | Hemiptera |
| Stable fly | Stomoxys calcitrans | Muscidae | Diptera |
| Stick insect, Indian walking | Carausius morosus | Diapheromeridae | Phasmatodea |
| Stink bug | various spp. | Pentatomidae | Hemiptera |
| Stink bug, Brown marmorated | Halyomorpha halys | Pentatomidae | Hemiptera |
| Strawberry crown moth | Synanthedon bibionipennis | Sesiidae | Lepidoptera |
| Strawberry leafroller | Ancylus comptana fragariae | Tortricidae | Lepidoptera |
| Strawberry root weevil | Otiorhynchus ovatus | Curculionidae | Coleoptera |
| Subterranean termite | various spp. | Rhinotermitidae | Isoptera |
| Sycamore Borer | Synanthedon resplendens | Sesiidae | Lepidoptera |
| Sycamore scale | Stomacoccus platani | Margarodidae | Hemiptera |
| Symphylan | various spp. | various | Symphyla |
| Tawny slug | Limacus flavus | Limacidae | Stylommatophora |
| Tent caterpillar | Malacosoma sp. | Lasiocampidae | Lepidoptera |
| Tentiform leafminer | Phyllonorycter sp. | Gracillariidae | Lepidoptera |
| Termite | various spp. | various | Isoptera |
| Termite, Dampwood | Zootermopsis spp. | Termopsidae | Isoptera |
| Termite, Drywood | Incisitermes minor | Kalotermitidae | Isoptera |
| Termite, Subterranean | various spp. | Rhinotermitidae | Isoptera |
| Termite, Western subterranean | Reticulitermes hesperus | Rhinotermitidae | Isoptera |
| Thief ant | Solenopsis molesta | Formicidae | Hymenoptera |
| Three-banded garden slug | Lehmannia valentiana | Limacidae | Stylommatophora |
| Thrips | various spp. | various | Thysanoptera |
| Thrips, Avocado | Scirtothrips perseae | Thripidae | Thysanoptera |
| Thrips, Bean | Caliothrips fasciatus | Thripidae | Thysanoptera |
| Thrips, Citrus | Scirtothrips citri | Thripidae | Thysanoptera |
| Thrips, Cuban laurel | Gynaikothrips ficorum | Phlaeothripidae | Thysanoptera |
| Thrips, Greenhouse | Heliothrips haemorrhoidalis | Thripidae | Thysanoptera |
| Thrips, Myoporum | Klambothrips myopori | Phlaeothripidae | Thysanoptera |
| Thrips, Onion | Thrips tabaci | Thripidae | Thysanoptera |
| Thrips, Toyon | Liothrips (=Rhyncothrips) ilex | Phlaeothripidae | Thysanoptera |
| Thrips, Western flower | Frankliniella occidentalis | Thripidae | Thysanoptera |
| Tick (Lyme disease) | Ixodes pacificus | Ixodidae | Ioxidida |
| Tomato fruitworm | Helicoverpa zea | Noctuidae | Lepidoptera |
| Tomato pinworm | Keiferia lycopersicella | Gelechiidae | Lepidoptera |
| Tomato russet mite | Aculops lycopersici | Eriophyidae | Acari |
| Toyon thrips | Liothrips (=Rhyncothrips) ilex | Phlaeothripidae | Thysanoptera |
| Treehopper, Buffalo | Stictocephala bisonia | Cicadellidae | Hemiptera |
| Treehoppers | various spp. | Cicadellidae | Hemiptera |
| True bug | various spp. | various | Hemiptera |
| Tuberworm, Potato | Phthorimaea operculella | Gelechiidae | Lepidoptera |
| Tuliptree scale | Toumeyella liriodendri | Coccidae | Hemiptera |
| Tumbling flower beetle | Mordella spp. | Mordellidae | Coleoptera |
| Turkestan cockroach | Blatta lateralis | Blatellidae | Orthoptera |
| Tussock moth, Western | Orgyia vetusta | Erebidae | Lepidoptera |
| Twig beetle | Pityophthorus spp. | Curculionidae | Coleoptera |
| Twig girdler, Juniper | Periploca nigra | Cosmopterigidae | Lepidoptera |
| Twohorned oak gall wasp | Dryocosmus dubiosus | Cynipidae | Hymenoptera |
| Variegated cutworm | Peridroma saucia | Noctuidae | Lepidoptera |
| Vegetable weevil | Listroderes costirostris obliquus | Curculionidae | Coleoptera |
| Velvety tree ant | Liometopum occidentale | Formicidae | Hymenoptera |
| Vinegar fly | Drosophila sp. | Drosophilidae | Diptera |
| Walking stick, Indian | Carausius morosus | Diapheromeridae | Phasmatodea |
| Walnut husk fly | Rhagoletis completa | Tephritidae | Diptera |
| Walnut scale | Quadraspidiotus juglansregiae | Diaspididae | Hemiptera |
| Walnut twig beetle | Pityophthorus juglandis | Curculionidae | Coleoptera |
| Warehouse beetle | Trogoderma variabile | Bostrichidae | Coleoptera |
| Wasp stings | various spp. | Vespidae | Hymenoptera |
| Wasp, Wood | various spp. | Siricidae | Hymenoptera |
| Wax scale | Ceroplastes sp. | Coccidae | Hemiptera |
| Webworm, Fall | Hyphantria cunea | Erebidae | Lepidoptera |
| Webworm, Sod | Crambus sperryellus | Crambidae | Lepidoptera |
| Weevil | various spp. | Curculionidae | Coleoptera |
| Weevil, Bean | various spp. | Curculionidae | Coleoptera |
| Weevil, Black vine | Otiorhynchus sulcatus | Curculionidae | Coleoptera |
| Weevil, Citrus root | Diaprepes abbreviatus | Curculionidae | Coleoptera |
| Weevil, Cribrate | Otiorhynchus cribricollis | Curculionidae | Coleoptera |
| Weevil, Diaprepes root | Diaprepes abbreviatus | Curculionidae | Coleoptera |
| Weevil, Douglas-fir twig | Cylindrocopturus furnissi | Curculionidae | Coleoptera |
| Weevil, Filbert | Curculio occidentis | Curculionidae | Coleoptera |
| Weevil, Obscure root | Sciopithes obscurus | Curculionidae | Coleoptera |
| Weevil, Pea | Bruchus pisorum | Curculionidae | Coleoptera |
| Weevil, Pea leaf | Sitona lineata | Curculionidae | Coleoptera |
| Weevil, Pepper | Anthonomus aenotinctus | Curculionidae | Coleoptera |
| Weevil, Pine | Pissodes sp. | Curculionidae | Coleoptera |
| Weevil, Pine needle | Scythropus sp. | Curculionidae | Coleoptera |
| Weevil, Red palm | Rhynchophorus ferrugineus | Curculionidae | Coleoptera |
| Weevil, Strawberry root | Otiorhynchus ovatus | Curculionidae | Coleoptera |
| Weevil, Vegetable | Listroderes costirostris obliquus | Curculionidae | Coleoptera |
| Weevil, Woods | Nemocestes incomptus | Curculionidae | Coleoptera |
| Weevil, Yucca | Scyphophorus yuccae | Curculionidae | Coleoptera |
| Western conifer seed bug | Leptoglossus occidentalis | Pentatomidae | Hemiptera |
| Western flower thrips | Frankliniella occidentalis | Thripidae | Thysanoptera |
| Western grapeleaf skeletonizer | Harrisina brillians | Zygaenidae | Lepidoptera |
| Western lawn moth | Tehama bonifatella | Crambidae | Lepidoptera |
| Western Poplar Clearwing | Paranthrene robiniae | Sesiidae | Lepidoptera |
| Western subterranean termite | Reticulitermes hesperus | Rhinotermitidae | Isoptera |
| Western Tarnished Plant Bug (Lygus) | Lygus hesperus | Miridae | Hemiptera |
| Western tussock moth | Orgyia vetusta | Erebidae | Lepidoptera |
| Wheat curl mite | Eriophyes tulipae | Eriophyidae | Acari |
| White garden snail | Theba pisana | Helicidae | Stylommatophora |
| White grub | Cyclocephala sp. | Scarabaeidae | Coleoptera |
| Whitefly | various spp. | Aleyrodidae | Hemiptera |
| Whitefly, Giant | Aleurodicus dugesii | Aleyrodidae | Hemiptera |
| Widow spiders | Latrodectus sp. | Theridiidae | Araneae |
| Willow leaf gall sawfly | Pontania pacifica | Tenthredinidae | Hymenoptera |
| Windscorpion | Eremobates pallipes | Eremobatidae | Solifugae |
| Wireworm | various spp. | Elateridae | Coleoptera |
| Wood wasp or horntail | various spp. | Siricidae | Hymenoptera |
| Wood-boring beetle in homes | various spp. | various | Coleoptera |
| Woods weevil | Nemocestes incomptus | Curculionidae | Coleoptera |
| Woolly apple aphid | Eriosoma lanigerum | Aphididae | Hemiptera |
| Woolly hackberry aphid | Shivaphis celti | Aphididae | Hemiptera |
| Yellowjacket | various spp. | Vespidae | Hymenoptera |
| Yucca weevil | Scyphophorus yuccae | Curculionidae | Coleoptera |
| Zoropsis spider | Zoropsis spinimana | Zoropsidae | Araneae |
Birds, Mammals, and Reptiles
Plant Diseases
| Plant or crop host | Common name | Scientific name | Type |
|---|---|---|---|
| all lawn grasses | Fairy ring | various | Fungus |
| all lawn grasses | Fungi, Nuisance | various | Fungus |
| all lawn grasses | Grease spot (Pythium blight) | Pythium spp. | Oomycete |
| all lawn grasses | Mushrooms | various | Fungus |
| all lawn grasses | Nuisance fungi | various | Fungus |
| all lawn grasses | Powdery mildew | Erysiphe graminis | Fungus |
| all lawn grasses | Pythium blight (grease spot) | Pythium spp. | Oomycete |
| all lawn grasses | Rust | Puccinia spp. | Fungus |
| almond | Almond leaf scorch (Bacterial leaf scorch) | Xylella fastidiosa | Bacteria |
| almond | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| almond | Bacterial canker | Pseudomonas syringae | Bacteria |
| almond | Bacterial leaf scorch (almond leaf scorch) | Xylella fastidiosa | Bacteria |
| almond | Brown rot | Monilinia spp. | Fungus |
| almond | Coryneum blight (Shot hole disease) | Wilsonomyces carpophilus | Fungus |
| almond | Crown gall | Agrobacterium tumefaciens | Bacteria |
| almond | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| almond | Phytophthora root and crown rot | Phytophthora spp. | Oomycete |
| almond | Scab | Cladosporium (syn. Fusicladium) carpophilum | Fungus |
| almond | Scab | Fusicladium (syn. Cladosporium) carpophilum | Fungus |
| almond | Shot hole disease (Coryneum blight) | Wilsonomyces carpophilus | Fungus |
| almond | Verticillium wilt | Verticillium dahliae | Fungus |
| alyssum | Clubroot | Plasmodiophora brassicae | Fungus |
| annual bluegrass | Brown patch (large patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| annual bluegrass | Dollar spot | various | Fungus |
| annual bluegrass | Fusarium patch (Microdochium patch or pink snow mold) | Microdochium nivale | Fungus |
| annual bluegrass | Large patch (brown patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| annual bluegrass | Microdochium patch (Fusarium patch or pink snow mold) | Microdochium nivale | Fungus |
| annual bluegrass | Pink snow mold (Microdochium patch or Fusarium patch) | Microdochium nivale | Fungus |
| annual bluegrass | Rhizoctonia blight (brown patch, large patch) | Rhizoctonia solani | Fungus |
| apple | Apple mosaic | Ilarvirus | Virus |
| apple | Apple scab | Venturia inaequalis | Fungus |
| apple | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| apple | Bacterial blossom blast | Pseudomonas syringae | Bacteria |
| apple | European canker (Necria canker) | Nectria galligena | Fungus |
| apple | Fire blight | Erwinia amylovora | Bacteria |
| apple | Necria canker (European canker) | Nectria galligena | Fungus |
| apple | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| apple | Papery bark (Sappy bark) | Trametes versicolor | Fungus |
| apple | Phytophthora root and crown rot | Phytophthora spp. | Oomycete |
| apple | Powdery mildew | Podosphaera leucotricha | Fungus |
| apple | Sappy bark (Papery bark) | Trametes versicolor | Fungus |
| apple | Varnish fungus rot | Ganoderma lucidum | Fungus |
| apricot | Bacterial canker and blast | Pseudomonas syringae | Bacteria |
| apricot | Coryneum blight (Shot hole disease) | Wilsonomyces carpophilus | Fungus |
| apricot | Eutypa dieback | Eutypa lata | Fungus |
| apricot | Powdery mildew | Podosphaera tridactyla | Fungus |
| apricot | Powdery mildew | Sphaerotheca pannosa | Fungus |
| apricot | Shot hole disease (Coryneum blight) | Wilsonomyces carpophilus | Fungus |
| artichoke | Botrytis rot (gray mold) | Botrytis cinerea | Fungus |
| artichoke | Gray mold (Botrytis rot) | Botrytis cinerea | Fungus |
| artichoke | Powdery mildew | Leveillula taurica | Fungus |
| ash | Anthracnose | Discula fraxinea | Fungus |
| ash | Ash dieback | Botryosphaeria stevensii | Fungus |
| asparagus | Fusarium wilt | Fusarium oxysporum | Fungus |
| asparagus | Phytophthora crown and spear rot | Phytophthora spp. | Oomycete |
| asparagus | Rust | Puccinia asparagi | Fungus |
| aspen | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| aspen | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| aster | Leaf spot diseases | Septoria spp. | Fungus |
| aster | Rust | various | Fungus |
| avocado | Avocado root rot | Phytophthora cinnamomi | Oomycete |
| avocado | Bacterial canker | Xanthomonas campestris | Bacteria |
| avocado | Dothiorella canker | Botryosphaeria spp. | Fungus |
| avocado | Dothiorella canker | Neofusicoccum spp. | Fungus |
| avocado | Phytophthora root and crown rot | Phytophthora spp. | Oomycete |
| avocado | Sunblotch | Avocado sunblotch viroid | Viroid |
| avocado | Verticillium wilt | Verticillium dahliae | Fungus |
| azalea | Ovulinia petal blight | Ovulinia azalea | Fungus |
| barberton daisy | Leaf spot diseases | Alternaria gerberae | Fungus |
| barberton daisy | Leaf spot diseases | Ascochyta gerberae | Fungus |
| beans | Bean rust | Uromyces phaseoli | Fungus |
| beans | Curly top | Beet curly top virus (BCTV) | Virus |
| beans | Damping off | Pythium spp. | Fungus |
| beans | Damping off | Rhizoctonia solani | Fungus |
| beans | Fusarium root rot | Fusarium solani | Fungus |
| beans | Mosaic viruses | none | Virus |
| beans | Powdery mildew | Erysiphe polygoni | Fungus |
| beans | Powdery mildew | Sphaerotheca fuliginea | Fungus |
| beans | White mold | Sclerotinia sclerotiorum | Fungus |
| beet | Powdery mildew | Erysiphe polygoni | Fungus |
| begonia | Bacterial soft rots, leaf spots, blights, wilts | Erwinia spp. | Bacteria |
| begonia | Leaf spot diseases | Phyllosticta spp. | Fungus |
| begonia | Powdery mildew | Golovinomyces cichoracearum | Fungus |
| bentgrasses | Red thread | Laetisaria fuciformis | Fungus |
| bentgrasses | Take-all patch | Gaeumannomyces graminis var. avenae | Fungus |
| bermudagrass | Brown patch (large patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| bermudagrass | Dollar spot | various | Fungus |
| bermudagrass | Large patch (brown patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| bermudagrass | Leaf spot | Bipolaris spp. | Fungus |
| bermudagrass | Red thread | Laetisaria fuciformis | Fungus |
| bermudagrass | Rhizoctonia blight (brown patch, large patch) | Rhizoctonia solani | Fungus |
| bermudagrass | Spring dead spot | Ophiosphaerella korrae | Fungus |
| black-eyed pea | Powdery mildew | Sphaerotheca fuliginea | Fungus |
| bluegrass | Brown patch (large patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| bluegrass | Fusarium patch (Microdochium patch or pink snow mold) | Microdochium nivale | Fungus |
| bluegrass | Large patch (brown patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| bluegrass | Leaf spot | Bipolaris spp. | Fungus |
| bluegrass | Pink snow mold (Microdochium patch or Fusarium patch) | Microdochium nivale | Fungus |
| bluegrass | Red thread | Laetisaria fuciformis | Fungus |
| bluegrass | Rhizoctonia blight (brown patch, large patch) | Rhizoctonia solani | Fungus |
| bluegrass | Summer patch | Magnaporthe poae | Fungus |
| boxwood | Pseudonectria canker (Volutella canker and blight) | Pseudonectria rousseliana | Fungus |
| boxwood | Volutella canker and blight (Pseudonectria canker) | Pseudonectria rousseliana | Fungus |
| broccoli | Bacterial leaf spot | Pseudomonas syringae | Bacteria |
| broccoli | Bacterial soft rot | Erwinia spp. | Bacteria |
| broccoli | Phytophthora root rot | Phytophthora megasperma | Oomycete |
| broccoli | Powdery mildew | Erysiphe cruciferarum | Fungus |
| brussel sprouts | Black blight (Ringspot) | Mycosphaerella brassicicola | Fungus |
| brussel sprouts | Powdery mildew | Erysiphe cruciferarum | Fungus |
| brussel sprouts | Ringspot (Black blight) | Mycosphaerella brassicicola | Fungus |
| buckthorn | Branch and twig dieback | various | Fungus |
| cabbage | Fusarium wilt (yellows) | Fusarium oxysporum | Fungus |
| cabbage | Yellows (Fusarium wilt) | Fusarium oxysporum | Fungus |
| california hazel | Eastern filbert blight | Anisogramma anomala | Fungus |
| camellia | Camellia petal and flower blight | Ciborinia camelliae | Fungus |
| caneberry | Anthracnose | Elsinoe spp. | Fungus |
| caneberry | Armillaria root rot | Armillaria spp. | Fungus |
| caneberry | Botrytis fruit rot (Gray mold) | Botrytis cinerea | Fungus |
| caneberry | Crown gall | Agrobacterium spp. | Bacteria |
| caneberry | Downy mildew | Peronospora sparsa | Oomycete |
| caneberry | Gray mold (Botrytis fruit rot) | Botrytis cinerea | Fungus |
| caneberry | Leaf spot | Mycosphaerella rubi | Fungus |
| caneberry | Orange rust | Arthuriomyces peckianus | Fungus |
| caneberry | Orange rust | Gymnoconia nitens | Fungus |
| caneberry | Phytophthora root rot | Phytophthora spp. | Oomycete |
| caneberry | Powdery mildew | Sphaerotheca macularis | Fungus |
| caneberry | Purple blotch | Septocyta ruborum | Fungus |
| caneberry | Verticillium wilt | Verticillium dahliae | Fungus |
| caneberry | Viruses | none | Virus |
| caneberry | Yellow rust | Phragmidium rubi-idaei | Fungus |
| cantaloupe | Angular leaf spot | Pseudomonas syringae | Fungus |
| cantaloupe | Curly top | Beet curly top virus (BCTV) | Virus |
| cantaloupe | Fusarium wilt | Fusarium oxysporum | Fungus |
| cantaloupe | Leaf spot, Angular | Pseudomonas syringae | Fungus |
| cantaloupe | Powdery mildew | Sphaerotheca fuliginea | Fungus |
| carnation | Alternaria blight | Alternaria spp. | Fungus |
| carnation | Armillaria root rot | Armillaria mellea | Fungus |
| carnation | Bacterial soft rots, leaf spots, blights, wilts | Pseudomonas spp. | Bacteria |
| carnation | Fairy-ring leaf spot | Cladosporium echinulatum | Fungus |
| carnation | Leaf spot, Fairy-ring | Cladosporium echinulatum | Fungus |
| carnation | Leaf spot, Septoria | Septoria dianthi | Fungus |
| carnation | Septoria leaf spot | Septoria dianthi | Fungus |
| carrot | Alternaria leaf blight | Alternaria dauci | Fungus |
| carrot | Bacterial soft rot | Erwinia carotovora | Bacteria |
| carrot | Beet leafhopper transmitted virescence agent (BLTVA) | Beet leafhopper transmitted virescence agent (BLTVA) | Phytoplasma |
| carrot | BLTVA (beet leafhopper transmitted virescence agent) | BLTVA (beet leafhopper transmitted virescence agent) | Phytoplasma |
| carrot | Cavity spot | Pythium violae | Oomycete |
| carrot | Cercospora leaf spot | Cercospora carotae | Fungus |
| carrot | Cottony soft rot (white mold) | Sclerotinia sclerotiorum | Fungus |
| carrot | Damping off and root dieback | Pythium spp. | Oomycete |
| carrot | Leaf spot, Cercospora | Cercospora carotae | Fungus |
| carrot | Powdery mildew | Erysiphe heraclei | Fungus |
| carrot | Powdery mildew | Erysiphe polygoni | Fungus |
| carrot | White mold (Cottony soft rot) | Sclerotinia sclerotiorum | Fungus |
| cauliflower | Powdery mildew | Erysiphe cruciferarum | Fungus |
| cherry | Almond leaf scorch (Bacterial leaf scorch) | Xylella fastidiosa | Bacteria |
| cherry | Bacterial leaf scorch (almond leaf scorch) | Xylella fastidiosa | Bacteria |
| cherry | Cherry buckskin (X-disease) | X-disease | Phytoplasma |
| cherry | Cherry leaf spot | Blumeriella jaapii | Fungus |
| cherry | Hairy turkey tail | Trametes hirsuta | Fungus |
| cherry | Leaf spot, Cherry | Blumeriella jaapii | Fungus |
| cherry | Parchment fungus | Stereum spp. | Fungus |
| cherry | Powdery mildew | Podosphaera clandestina | Fungus |
| cherry | Sulfur fungus | Laetiporus sulphureus | Fungus |
| cherry | Turkey tail | Trametes versicolor | Fungus |
| cherry | Varnish fungus rot | Ganoderma lucidum | Fungus |
| cherry | Verticillium wilt | Verticillium spp. | Fungus |
| cherry | Viruses | none | Virus |
| cherry | X-disease (Cherry buckskin) | X-disease | Phytoplasma |
| china aster | Leaf spot diseases | Septoria spp. | Fungus |
| china aster | Rust | various | Fungus |
| chrysanthemum | Leaf spot, Septoria | Septoria chrysanthemi | Fungus |
| chrysanthemum | Septoria leaf spot | Septoria chrysanthemi | Fungus |
| chrysanthemum | Verticillium wilt | Verticillium albo-atrum | Fungus |
| chrysanthemum | Verticillium wilt | Verticillium dahliae | Fungus |
| citrus | Alternaria rot | Alternaria citri | Fungus |
| citrus | Anthracnose | Collectotrichum gloeosporioides | Fungus |
| citrus | Anthracnose | Glomerella cingulata | Fungus |
| citrus | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| citrus | Artist's conk | Ganoderma applanatum | Fungus |
| citrus | Brown rot | Phytophthora spp. | Fungus |
| citrus | Citrus blast | Pseudomonas syringae | Fungus |
| citrus | Citrus greening (Huanglongbing disease) | Candidatus Liberibacter asiaticus | Bacteria |
| citrus | Exocortis | Citrus exocortis viroid (CEVd) | Viroid |
| citrus | Hairy turkey tail | Trametes hirsuta | Fungus |
| citrus | Huanglongbing disease (Citrus greening) | Candidatus Liberibacter asiaticus | Bacteria |
| citrus | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| citrus | Phytophthora gummosis | Phytophthora spp. | Oomycete |
| citrus | Phytophthora root rot | Phytophthora spp. | Oomycete |
| citrus | Tristeza disease complex | Tristeza virus | Virus |
| citrus | Varnish fungus rot | Ganoderma lucidum | Fungus |
| coffeeberry | Branch and twig dieback | various | Fungus |
| cole crops | Clubroot | Plasmodiophora brassicae | Fungus |
| cole crops | Downy mildew | Peronospora parasitica | Oomycete |
| cole crops | Lettuce drop (white mold) | Sclerotinia spp. | Fungus |
| cole crops | Powdery mildew | Erysiphe cruciferarum | Fungus |
| cole crops | Verticillium wilt | Verticillium dahliae | Fungus |
| cole crops | White mold (lettuce drop) | Sclerotinia spp. | Fungus |
| conifers | Annosus root disease | Fomes annosus | Fungus |
| conifers | Annosus root disease | Heterobasidion annosum | Fungus |
| conifers | Needle cast fungi | various | Fungus |
| corn | Bacterial soft rot | Erwinia spp. | Bacteria |
| corn | Common rust | Puccinia sorghi | Fungus |
| corn | Common smut | Ustilago maydis | Fungus |
| corn | Damping off and seed rots | Pythium spp. | Oomycete |
| corn | Fusarium ear and stalk rot | Fusarium spp. | Fungus |
| corn | Head smut | Sphacelotheca reiliana | Fungus |
| corn | Maize dwarf mosaic | Maize dwarf mosaic virus | Virus |
| cottonwood | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| cottonwood | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| crape myrtle | Powdery mildew | Erysiphe lagerstroemiae | Fungus |
| cryptomeria | Cryptomeria blight | Pestalotiopsis funerea | Fungus |
| cucumber | Powdery mildew | Erysiphe cichoracearum | Fungus |
| cucumber | Powdery mildew | Erysiphe cichoracearum | Fungus |
| cucurbits | Downy mildew | Pseudoperonospora cubensis | Oomycete |
| cucurbits | Powdery mildew | Sphaerotheca fuliginea | Fungus |
| cucurbits | Powdery mildew | Sphaerotheca fuliginea | Fungus |
| cucurbits | Root rot | Phytophthora spp. | Oomycete |
| cucurbits | Root rot | Pythium spp. | Oomycete |
| cucurbits | Verticillium wilt | Verticillium dahliae | Fungus |
| cucurbits | Viruses | none | Virus |
| cucurbits | White mold | Sclerotinia sclerotiorum | Fungus |
| daffodil | Dry rot | Stromatinia gladioli | Fungus |
| daffodil | Smoulder | Botrytis narcissicola | Fungus |
| daffodil | Smoulder | Sclerotinia narcissicola | Fungus |
| dichondra | Southern blight | Sclerotium rolfsii | Fungus |
| dogwood | Anthracnose | Elsinoe corni | Fungus |
| douglas fir | Bacterial gall | Agrobacterium tumefaciens | Bacteria |
| eggplant | Mosaic viruses | none | Virus |
| eggplant | Phytophthora root and crown rot | Phytophthora capsici | Oomycete |
| eggplant | Powdery mildew | Leveillula taurica | Fungus |
| eggplant | Verticillium wilt | Verticillium dahliae | Fungus |
| elm | Alcoholic flux (Foamy canker) | none | Unknown |
| elm | Dutch elm disease | Ophiostoma ulmi | Fungus |
| elm | Foamy canker (alcoholic flux) | none | Unknown |
| endive | Powdery mildew | Erysiphe cichoracearum | Fungus |
| fescues | Brown patch (large patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| fescues | Dollar spot | various | Fungus |
| fescues | Fusarium patch (Microdochium patch or pink snow mold) | Microdochium nivale | Fungus |
| fescues | Gray leaf spot | Pyriculria grisea | Fungus |
| fescues | Large patch (brown patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| fescues | Leaf spot | Bipolaris spp. | Fungus |
| fescues | Microdochium patch (Fusarium patch or pink snow mold) | Microdochium nivale | Fungus |
| fescues | Pink snow mold (Microdochium patch or Fusarium patch) | Microdochium nivale | Fungus |
| fescues | Red thread | Laetisaria fuciformis | Fungus |
| fescues | Rhizoctonia blight (brown patch, large patch) | Rhizoctonia solani | Fungus |
| fescues | Southern blight | Sclerotium rolfsii | Fungus |
| fig | Fig mosaic | Fig mosaic emaravirus | Virus |
| fig | Phomopsis canker | Phomopsis spp. | Fungus |
| fig | Souring | none | Yeast |
| filbert | Eastern filbert blight | Anisogramma anomala | Fungus |
| fine fescues | Summer patch | Magnaporthe poae | Fungus |
| forsythia | Stem gall | Phomopsis spp. | Fungus |
| freesia | Dry rot | Stromatinia gladioli | Fungus |
| geranium | Alternaria leaf spot | Alternaria alternata | Fungus |
| geranium | Leaf spot, Alternaria | Alternaria alternata | Fungus |
| gerbera daisy | Leaf spot diseases | Alternaria gerberae | Fungus |
| gerbera daisy | Leaf spot diseases | Ascochyta gerberae | Fungus |
| gladiolus | Curvularia leaf spot | Curvularia spp. | Fungus |
| gladiolus | Dry rot | Stromatinia gladioli | Fungus |
| gladiolus | Leaf spot, Curvularia | Curvularia spp. | Fungus |
| gladiolus | Leaf spot, Stemphylium | Stemphylium spp. | Fungus |
| gladiolus | Scab | Pseudomonas gladioli | Fungus |
| gladiolus | Stemphylium leaf spot | Stemphylium spp. | Fungus |
| grape | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| grape | Bunch rot (Gray mold) | Botrytis cinerea | Fungus |
| grape | Crown gall | Agrobacterium tumefaciens | Bacteria |
| grape | Downy mildew | Plasmopara viticola | Oomycete |
| grape | Eutypa dieback | Eutypa lata | Fungus |
| grape | Gray mold (Bunch rot) | Botrytis cinerea | Fungus |
| grape | Leaf spot and Phomopsis cane | Phomopsis viticola | Fungus |
| grape | Measles | Phaeoacremonium spp. | Fungus |
| grape | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| grape | Phomopsis cane and leaf spot | Phomopsis viticola | Fungus |
| grape | Phytophthora crown and root rot | Phytophthora megasperma | Oomycete |
| grape | Pierce's disease | Xylella fastidiosa | Bacteria |
| grape | Powdery mildew | Erysiphe necator | Fungus |
| grape | Viruses | various | Virus |
| hackberry | Escallonia dieback | none | Unknown |
| hazlenut | Eastern filbert blight | Anisogramma anomala | Fungus |
| hemlock | Twig blights | Kabatina juniperi | Fungus |
| iris | Fire spot | Heterosporium gracile | Fungus |
| iris | Ink spot | Drechslera iridis | Fungus |
| juniper | Twig blights | Phomopsis juniperovora | Fungus |
| kentucky bluegrass | Anthracnose | Colletotrichum graminicola | Fungus |
| kentucky bluegrass | Fusarium blight | Fusarium spp. | Fungus |
| kentucky bluegrass | Southern blight | Sclerotium rolfsii | Fungus |
| kikuyugrass | Brown patch (large patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| kikuyugrass | Gray leaf spot | Pyriculria grisea | Fungus |
| kikuyugrass | Large patch (brown patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| kikuyugrass | Leaf spot | Bipolaris spp. | Fungus |
| kikuyugrass | Rhizoctonia blight (brown patch, large patch) | Rhizoctonia solani | Fungus |
| laurel | Coryneum blight (Shot hole disease) | Wilsonomyces carpophilus | Fungus |
| laurel | Shot hole disease (Coryneum blight) | Wilsonomyces carpophilus | Fungus |
| lettuce | Big vein | Lettuce big vein virus | Virus |
| lettuce | Botrytis rot (gray mold) | Botrytis cinerea | Fungus |
| lettuce | Downy mildew | Bremia lactucae | Oomycete |
| lettuce | Gray mold (Botrytis rot) | Botrytis cinerea | Fungus |
| lettuce | Lettuce drop (white mold) | Sclerotinia spp. | Fungus |
| lettuce | Powdery mildew | Erysiphe cichoracearum | Fungus |
| lettuce | Powdery mildew | Erysiphe cichoracearum | Fungus |
| lettuce | Viruses | various | Virus |
| lettuce | White mold (lettuce drop) | Sclerotinia spp. | Fungus |
| live oak | Drippy acorns (Drippy oak) | Erwinia quercina | Bacteria |
| live oak | Drippy oak (Drippy acorns) | Erwinia quercina | Bacteria |
| london plane tree | Canker stain (Ceratocystis canker) | Ceratocystis fimbriata | Fungus |
| london plane tree | Ceratocystis canker (Canker stain) | Ceratocystis fimbriata | Fungus |
| marigold | Leaf spot diseases | Alternaria spp. | Fungus |
| melon | Powdery mildew | Erysiphe cichoracearum | Fungus |
| nasturtium | Clubroot | Plasmodiophora brassicae | Fungus |
| nectarine | Coryneum blight (Shot hole disease) | Wilsonomyces carpophilus | Fungus |
| nectarine | Peach leaf curl | Taphrina deformans | Fungus |
| nectarine | Peach leaf curl | Taphrina deformans | Fungus |
| nectarine | Powdery mildew | Podosphaera leucotricha | Fungus |
| nectarine | Powdery mildew | Sphaerotheca pannosa | Fungus |
| nectarine | Rust | Tranzschelia discolor | Fungus |
| nectarine | Scab | Cladosporium (syn. Fusicladium) carpophilum | Fungus |
| nectarine | Scab | Fusicladium (syn. Cladosporium) carpophilum | Fungus |
| nectarine | Shot hole disease (Coryneum blight) | Wilsonomyces carpophilus | Fungus |
| nectarine | Turkey tail | Trametes versicolor | Fungus |
| oak | Alcoholic flux (Foamy canker) | none | Unknown |
| oak | Anthracnose | Gloesporium quercum | Fungus |
| oak | Foamy canker (alcoholic flux) | none | Unknown |
| oak | Oak branch dieback | Diplodia quercina | Fungus |
| oak | Oak twig blight | Cryptocline cinerescens | Fungus |
| okra | Powdery mildew | Sphaerotheca fuliginea | Fungus |
| oleander | Oleander knot | Pseudomonas savastanoi pv. nerii | Bacteria |
| oleander | Oleander leaf scorch | Xylella fastidiosa | Bacteria |
| olive | Varnish fungus rot | Ganoderma lucidum | Fungus |
| olive tree | Olive knot | Pseudomonas savastanoi pv. savastanoi | Bacteria |
| onions and garlic | Bacterial soft rots | various | Bacteria |
| onions and garlic | Basal rot | Fusarium spp. | Fungus |
| onions and garlic | Black mold | Aspergillus niger | Fungus |
| onions and garlic | Blue mold rot | Penicillium spp. | Fungus |
| onions and garlic | Botrytis bulb rot (Neck rot) | Botrytis spp. | Fungus |
| onions and garlic | Botrytis leafspot (leaf blight) | Botrytis spp. | Fungus |
| onions and garlic | Downy mildew | Peronospora destructor | Oomycete |
| onions and garlic | Leaf blight (Botrytis leafspot) | Botrytis spp. | Fungus |
| onions and garlic | Neck rot (Botrytis bulb rot) | Botrytis spp. | Fungus |
| onions and garlic | Pink root | Phoma terrestris | Fungus |
| onions and garlic | Purple blotch | Alternaria porri | Fungus |
| onions and garlic | Stemphylium leaf blight | Stemphylium vesicarium | Fungus |
| onions and garlic | White rot | Sclerotium cepivorum | Fungus |
| palm tree | Palm diseases | various | Fungus |
| pansy | Leaf spot diseases | Alternaria spp. | Fungus |
| pansy | Leaf spot diseases | Cercospora spp. | Fungus |
| parsley | Powdery mildew | Erysiphe heraclei | Fungus |
| parsnip | Powdery mildew | Erysiphe heraclei | Fungus |
| pea | Ascochyta blight | Ascochyta spp. | Fungus |
| pea | Damping off and root rot | various | Fungus |
| pea | Downy mildew | Peronospora viciae f.sp. pisi | Oomycete |
| pea | Fusarium wilt | Fusarium oxysporum | Fungus |
| pea | Powdery mildew | Erysiphe pisi | Fungus |
| pea | Powdery mildew | Erysiphe pisi | Fungus |
| pea | Virus diseases | none | Virus |
| peach | Coryneum blight (Shot hole disease) | Wilsonomyces carpophilus | Fungus |
| peach | Peach leaf curl | Taphrina deformans | Fungus |
| peach | Peach leaf curl | Taphrina deformans | Fungus |
| peach | Powdery mildew | Podosphaera leucotricha | Fungus |
| peach | Powdery mildew | Sphaerotheca pannosa | Fungus |
| peach | Rust | Tranzschelia discolor | Fungus |
| peach | Scab | Cladosporium (syn. Fusicladium) carpophilum | Fungus |
| peach | Scab | Fusicladium (syn. Cladosporium) carpophilum | Fungus |
| peach | Shot hole disease (Coryneum blight) | Wilsonomyces carpophilus | Fungus |
| peach | Varnish fungus rot | Ganoderma lucidum | Fungus |
| pear | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| pear | European canker (Necria canker) | Nectria galligena | Fungus |
| pear | Fire blight | Erwinia amylovora | Bacteria |
| pear | Necria canker (European canker) | Nectria galligena | Fungus |
| pear | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| pear | Pear decline | MLOÂ Â | Phytoplasma |
| pear | Pear rust | Gymnosporangium libocedri | Fungus |
| pear | Pear scab | Venturia pirina | Fungus |
| peony | Leaf blotch | Cladosporium paeoniae | Fungus |
| pepper | Curly top | Beet curly top virus (BCTV) | Virus |
| pepper | Mosaic viruses | none | Virus |
| pepper | Phytophthora root and crown rot | Phytophthora spp. | Oomycete |
| pepper | Powdery mildew | Leveillula taurica | Fungus |
| pepper | Spotted wilt virus | Tomato spotted wilt virus | Virus |
| pepper | Verticillium wilt | Verticillium dahliae | Fungus |
| pine | Pitch canker | Fusarium circinatum | Fungus |
| plum | Powdery mildew | Podosphaera tridactyla | Fungus |
| plum | Powdery mildew | Sphaerotheca pannosa | Fungus |
| poplar | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| poplar | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| potato | Bacterial ring rot | Clavibacter michiganensis | Bacteria |
| potato | Bacterial soft rot and blackleg | Erwinia carotovora | Bacteria |
| potato | Common scab | Streptomyces spp. | Fungus |
| potato | Curly top | Beet curly top virus (BCTV) | Virus |
| potato | Early blight | Alternaria solani | Fungus |
| potato | Late blight | Phytophthora infestans | Oomycete |
| potato | Mosaic viruses | none | Virus |
| potato | Potato leafroll | Potato leaf roll virus | Virus |
| potato | Powdery mildew | Erysiphe cichoracearum | Fungus |
| potato | Powdery scab | Spongospora subterranea | Fungus |
| potato | Seed piece decay | Erwinia carotovora | Bacteria |
| potato | Seed piece decay | Fusarium spp. | Bacteria |
| potato | Verticillium wilt | Verticillium dahliae | Fungus |
| primrose | Leaf spot diseases | Ramularia primulae | Fungus |
| prune | Powdery mildew | Podosphaera tridactyla | Fungus |
| pumpkin | Fusarium crown and foot rot | Fusarium solani | Fungus |
| pumpkin | Powdery mildew | Erysiphe cichoracearum | Fungus |
| quince | Powdery mildew | Podosphaera leucotricha | Fungus |
| radicchio | Powdery mildew | Erysiphe cruciferarum | Fungus |
| radish | Powdery mildew | Erysiphe cruciferarum | Fungus |
| redberry | Branch and twig dieback | various | Fungus |
| rhamnus | Branch and twig dieback | various | Fungus |
| rhododendron | Ovulinia petal blight | Ovulinia azalea | Fungus |
| rose | Anthracnose | Sphaceloma rosarum | Fungus |
| rose | Black spot | Diplocarpon rosae | Fungus |
| rose | Botrytis blight | Botrytis cinerea | Fungus |
| rose | Crown gall | Agrobacterium tumefaciens | Bacteria |
| rose | Downy mildew | Peronospora sparsa | Oomycete |
| rose | Powdery mildew | Podosphaera pannosa | Fungus |
| rose | Rust | Phragmidium mucronatum | Fungus |
| rose | Viruses | various | Virus |
| ryegrasses | Brown patch (large patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| ryegrasses | Dollar spot | various | Fungus |
| ryegrasses | Fusarium patch (Microdochium patch or pink snow mold) | Microdochium nivale | Fungus |
| ryegrasses | Gray leaf spot | Pyriculria grisea | Fungus |
| ryegrasses | Large patch (brown patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| ryegrasses | Leaf spot | Bipolaris spp. | Fungus |
| ryegrasses | Microdochium patch (Fusarium patch or pink snow mold) | Microdochium nivale | Fungus |
| ryegrasses | Pink snow mold (Microdochium patch or Fusarium patch) | Microdochium nivale | Fungus |
| ryegrasses | Red thread | Laetisaria fuciformis | Fungus |
| ryegrasses | Rhizoctonia blight (brown patch, large patch) | Rhizoctonia solani | Fungus |
| ryegrasses | Southern blight | Sclerotium rolfsii | Fungus |
| seashore paspalum | Dollar spot | various | Fungus |
| seashore paspalum | Spring dead spot | Ophiosphaerella korrae | Fungus |
| snapdragon | Leaf spot diseases | Phyllosticta spp. | Fungus |
| spinach | Downy mildew | Peronospora farinosa | Oomycete |
| spinach | Viruses | various | Virus |
| squash | Fusarium crown and foot rot | Fusarium solani | Fungus |
| squash | Powdery mildew | Erysiphe cichoracearum | Fungus |
| st. augustine grass | Brown patch (large patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| st. augustine grass | Gray leaf spot | Pyriculria grisea | Fungus |
| st. augustine grass | Large patch (brown patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| st. augustine grass | Rhizoctonia blight (brown patch, large patch) | Rhizoctonia solani | Fungus |
| stone fruit | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| stone fruit | Brown rot | Monilinia spp. | Fungus |
| stone fruit | Cytospora canker | Cytospora spp. | Fungus |
| stone fruit | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| stone fruit | Phytophthora root and crown rot | Phytophthora spp. | Oomycete |
| strawberry | Angular leaf spot | Xanthamonas fragariae | Fungus |
| strawberry | Black root rot | various | Fungus |
| strawberry | Botrytis rot (gray mold) | Botrytis cinerea | Fungus |
| strawberry | Common leaf spot | Mycosphaerella fragariae | Fungus |
| strawberry | Common leaf spot | Ramularia tulasnei | Fungus |
| strawberry | Gray mold (Botrytis rot) | Botrytis cinerea | Fungus |
| strawberry | Leaf blotch | Gnomonia fragariae | Fungus |
| strawberry | Leaf blotch | Zythia fragariae | Fungus |
| strawberry | Leaf scorch | Diplocarpon earlianum | Fungus |
| strawberry | Leaf spot | various | Fungus |
| strawberry | Leaf spot, Angular | Xanthamonas fragariae | Fungus |
| strawberry | Leaf spot, Common | Mycosphaerella fragariae | Fungus |
| strawberry | Leaf spot, Common | Ramularia tulasnei | Fungus |
| strawberry | Leak (Rhizopus rot) | Rhizopus spp. | Fungus |
| strawberry | Phomopsis leaf blight | Phomopsis obscurans | Fungus |
| strawberry | Phytophthora root and crown rot (Red Stele) | Phytophthora spp. | Oomycete |
| strawberry | Powdery mildew | Sphaerotheca macularis | Fungus |
| strawberry | Red Stele (Phytophthora root and crown rot) | Phytophthora spp. | Oomycete |
| strawberry | Rhizopus rot (Leak) | Rhizopus spp. | Fungus |
| strawberry | Verticillium wilt | Verticillium dahliae | Fungus |
| strawberry | Viruses | none | Virus |
| sunflower | Powdery mildew | Golovinomyces cichoracearum | Fungus |
| sweet gum/liquidambar | Alcoholic flux (Foamy canker) | none | Unknown |
| sweet gum/liquidambar | Foamy canker (alcoholic flux) | none | Unknown |
| sweet pea | Ascochyta blight | Ascochyta lathyri | Fungus |
| sweet pea | Leaf spot, Ramularia | Ramularia deusta | Fungus |
| sweet pea | Ramularia leaf spot | Ramularia deusta | Fungus |
| sycamore | Anthracnose | Apiognomonia veneta | Fungus |
| sycamore | Canker stain (Ceratocystis canker) | Ceratocystis fimbriata | Fungus |
| sycamore | Ceratocystis canker (Canker stain) | Ceratocystis fimbriata | Fungus |
| tomatillo | Powdery mildew | Leveillula taurica | Fungus |
| tomato | Black mold | Alternaria alternata | Fungus |
| tomato | Buckeye (Phytophthora root rot) | Phytophthora spp. | Oomycete |
| tomato | Curly top | Beet curly top virus (BCTV) | Virus |
| tomato | Early blight | Alternaria solani | Fungus |
| tomato | Fusarium wilt | Fusarium oxysporum | Fungus |
| tomato | Late blight | Phytophthora infestans | Oomycete |
| tomato | Phytophthora root rot (Buckeye) | Phytophthora spp. | Oomycete |
| tomato | Powdery mildew | Erysiphe lycopersici | Fungus |
| tomato | Powdery mildew | Leveillula taurica | Fungus |
| tomato | Powdery mildew | Leveillula taurica | Fungus |
| tomato | Tobacco mosaic | Tobacco mosaic virus  | Virus |
| tomato | Tomato spotted wilt | Tomato spotted wilt virus | Virus |
| tomato | Verticillium wilt | Verticillium dahliae | Fungus |
| tomato | White mold | Sclerotinia sclerotiorum | Fungus |
| transvaal daisy | Leaf spot diseases | Alternaria gerberae | Fungus |
| transvaal daisy | Leaf spot diseases | Ascochyta gerberae | Fungus |
| turnip | Powdery mildew | Erysiphe cruciferarum | Fungus |
| various flowers | Armillaria root rot | Armillaria mellea | Fungus |
| various flowers | Aster yellows | Aster yellows MLO | Phytoplasma |
| various flowers | Bacterial soft rots, leaf spots, blights, wilts | Xanthomonas spp. | Bacteria |
| various flowers | Botrytis blight (Gray mold) | Botrytis cinerea | Fungus |
| various flowers | Crown gall | Agrobacterium tumefaciens | Bacteria |
| various flowers | Downy mildew | Plasmopara (syn. Peronospora) spp. | Oomycete |
| various flowers | Fasciation | none | Bacteria |
| various flowers | Fusarium wilt | Fusarium oxysporum | Fungus |
| various flowers | Gray mold (Botrytis blight) | Botrytis cinerea | Fungus |
| various flowers | Leaf spot diseases | various | Fungus |
| various flowers | Root, stem, and crown rot | various | Fungus |
| various flowers | Rust | Puccinia spp. | Fungus |
| various flowers | Verticillium wilt | Verticillium albo-atrum | Fungus |
| various flowers | Viruses | none | Virus |
| various fruits and nuts | Alcoholic flux (Foamy canker) | na | Unknown |
| various fruits and nuts | Bacterial blight | Pseudomonas syringae | Bacteria |
| various fruits and nuts | Foamy canker (alcoholic flux) | na | Unknown |
| various fruits and nuts | Hairy root | Agrobacterium rhizogenes | Bacteria |
| various fruits and nuts | Sooty mold | various | Fungus |
| various fruits and nuts | Wood decay (general) | various | Fungus |
| various trees and shrubs | Anthracnose | various | Fungus |
| various trees and shrubs | Artist's conk | Ganoderma applanatum | Fungus |
| various trees and shrubs | Bacterial blight | Pseudomonas syringae | Bacteria |
| various trees and shrubs | Botrytis blight (Gray mold) | Botrytis cinerea | Fungus |
| various trees and shrubs | Canker diseases | various | Fungus |
| various trees and shrubs | Collar, foot, root, and crown rot | Phytophthora spp. | Oomycete |
| various trees and shrubs | Common split gill | Schizophyllum commune | Fungus |
| various trees and shrubs | Crown gall | Agrobacterium tumefaciens | Bacteria |
| various trees and shrubs | Damping off diseases | Pythium spp. | Oomycete |
| various trees and shrubs | Damping off diseases | Rhizoctonia spp. | Oomycete |
| various trees and shrubs | Dematophora root rot (Rosellinia root rot) | Dematophora necatrix | Fungus |
| various trees and shrubs | Dematophora root rot (Rosellinia root rot) | Rosellinia necatrix | Fungus |
| various trees and shrubs | Entomosporium leaf spot | Entomosporium spp. | Fungus |
| various trees and shrubs | Fusarium wilt | Fusarium oxysporum | Fungus |
| various trees and shrubs | Gray mold (Botrytis blight) | Botrytis cinerea | Fungus |
| various trees and shrubs | Hairy root | Agrobacterium rhizogenes | Bacteria |
| various trees and shrubs | Hairy turkey tail | Trametes hirsuta | Fungus |
| various trees and shrubs | Leaf gall | Exobasidium spp. | Fungus |
| various trees and shrubs | Leaf spot diseases | various | Fungus |
| various trees and shrubs | Leaf spot, Entomosporium | Entomosporium spp. | Fungus |
| various trees and shrubs | Leaf spot, Septoria | Septoria spp. | Fungus |
| various trees and shrubs | Needle blight | various | Fungus |
| various trees and shrubs | Oak leaf blister (Taphrina leaf curl) | Taphrina spp. | Fungus |
| various trees and shrubs | Oyster mushroom | Pleurotus ostreatus | Fungus |
| various trees and shrubs | Parchment fungus | Stereum spp. | Fungus |
| various trees and shrubs | Powdery mildew | various | Fungus |
| various trees and shrubs | Rosellinia root rot (Dematophora root rot ) | Dematophora necatrix | Fungus |
| various trees and shrubs | Rosellinia root rot (Dematophora root rot ) | Rosellinia necatrix | Fungus |
| various trees and shrubs | Rust | various | Fungus |
| various trees and shrubs | Scab | various | Fungus |
| various trees and shrubs | Septoria leaf spot | Septoria spp. | Fungus |
| various trees and shrubs | Sooty mold | various | Fungus |
| various trees and shrubs | Stem cankers and dieback | various | Fungus |
| various trees and shrubs | Sudden oak death | Phytophthora ramorum | Oomycete |
| various trees and shrubs | Sulfur fungus | Laetiporus sulphureus | Fungus |
| various trees and shrubs | Taphrina leaf curl (Oak leaf blister) | Taphrina spp. | Fungus |
| various trees and shrubs | Turkey tail | Trametes versicolor | Fungus |
| various trees and shrubs | Varnish fungus rot | Ganoderma lucidum | Fungus |
| various trees and shrubs | Verticillium wilt | Verticillium spp. | Fungus |
| various trees and shrubs | Viruses | none | Virus |
| various trees and shrubs | Wetwood or slime flux | various | Bacteria |
| various trees and shrubs | Witches' broom | various | Fungus |
| various trees and shrubs | Wood decay (general) | various | Fungus |
| various vegetables and melons | Basal stem rots | Mycosphaerella spp. | Fungus |
| various vegetables and melons | Basal stem rots | Phoma spp. | Fungus |
| various vegetables and melons | Damping off and seed rots | Fusarium spp. | Oomycete |
| various vegetables and melons | Damping off and seed rots | Phytophthora spp. | Oomycete |
| various vegetables and melons | Damping off and seed rots | Pythium spp. | Oomycete |
| various vegetables and melons | Damping off and seed rots | Rhizoctonia spp. | Oomycete |
| various vegetables and melons | Damping off and seed rots | Thielaviopsis spp. | Oomycete |
| various vegetables and melons | Powdery mildew | Leveillula taurica | Fungus |
| verbena | Leaf spot diseases | Septoria verbenae | Fungus |
| violet | Leaf spot diseases | Alternaria spp. | Fungus |
| violet | Leaf spot diseases | Cercospora spp. | Fungus |
| walnut | Anthracnose | Gnomonia leptostyla | Fungus |
| walnut | Armillaria root rot (Oak root fungus) | Armillaria mellea | Fungus |
| walnut | Blackline | cherry leaf roll virus | Virus |
| walnut | Branch wilt | Hendersonula tortuloidea | Fungus |
| walnut | Common split gill | Schizophyllum commune | Fungus |
| walnut | Deep bark canker | Erwinia rubrifaciens | Bacteria |
| walnut | Hairy turkey tail | Trametes hirsuta | Fungus |
| walnut | Oak root fungus (Armillaria root rot) | Armillaria mellea | Fungus |
| walnut | Oyster mushroom | Pleurotus ostreatus | Fungus |
| walnut | Phytophthora root and crown rot | Phytophthora spp. | Oomycete |
| walnut | Shallow bark canker | Erwinia nigrifluens | Bacteria |
| walnut | Sulfur fungus | Laetiporus sulphureus | Fungus |
| walnut | Turkey tail | Trametes versicolor | Fungus |
| walnut | Walnut blight | Xanthamonas campestris | Bacteria |
| watermelon | Fusarium wilt | Fusarium oxysporum | Fungus |
| zinnia | Leaf spot diseases | Alternaria spp. | Fungus |
| zinnia | Leaf spot diseases | Phyllosticta zinniae | Fungus |
| zoysiagrass | Brown patch (large patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| zoysiagrass | Dollar spot | various | Fungus |
| zoysiagrass | Fusarium patch (Microdochium patch or pink snow mold) | Microdochium nivale | Fungus |
| zoysiagrass | Large patch (brown patch or Rhizoctonia blight ) | Rhizoctonia solani | Fungus |
| zoysiagrass | Leaf spot | Bipolaris spp. | Fungus |
| zoysiagrass | Microdochium patch (Fusarium patch or pink snow mold) | Microdochium nivale | Fungus |
| zoysiagrass | Pink snow mold (Microdochium patch or Fusarium patch) | Microdochium nivale | Fungus |
| zoysiagrass | Rhizoctonia blight (brown patch, large patch) | Rhizoctonia solani | Fungus |
| zoysiagrass | Spring dead spot | Ophiosphaerella korrae | Fungus |
