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Other Pests You May See—Dormant Season

Names links to more information on identification and management.

Click on photos to enlarge

Eriophyid mite damage.
Eriophyid mites
Identification tip: These tiny, teardrop-shaped mites require a hand lens with at least 10X magnification to see. Overwintering sites include under bud scales, next to buds, or in bark crevices.

Fruittree leafroller egg masses
Fruittree leafroller egg masses
Identification tip: Fruittree leafroller eggs are laid in masses on limbs and twigs and are covered with a gray secretion that turns white upon aging.

Italian pear scale infestation.
Italian pear scale
Identification tip: Look under moss or lichens for the light gray covering of this scale. Under the cover, the scale's body is reddish.
Peach twig borer hibernacula
Peach twig borer hibernacula
Identification tip: Hibernacula are most commonly found in the crotch of 2- or 3-year-old wood. Look for tiny piles of reddish frass.
Tree borers
Peachtree borer damage.
Peachtree borer
Identification tip: Look for small piles of gum mixed with frass around a tree base.
Shothole borer damage.
Shothole borer
Identification tip: Tiny, circular holes about 1/16 inch in diameter are created when adults emerge from the tree.
American plum borer damage.
American plum borer
Identification tip: Extensive gumming around scaffold crotches, at pruning wounds, or in crown galls can indicate the presence of this borer.
Vole damage.
Identification tip: Voles chew the bark off trees just above and below the soil line.
Pocket gopher mounds.
Pocket gophers
Identification tip: Pocket gopher mounds are generally fan-shaped and have a plugged opening.

Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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