Invertebrates: Sixth Leaf to Tassel Appearance

Armyworms
Identification tips: Black with a white or red stripe; eggs are covered with a gray, cottony material, found on weeds near field; look for holes in leaves and girdled branches.

Corn leafminer
Identification tips: Pale-green to yellowish maggots; look for mines on lower leaves up to the sixth leaf.

Cucumber beetles
Identification tips: Yellow with black spots or black with white stripes; larvae hatch in soil and feed on roots; adults feed on corn leaves, tassels, and silks.

Grasshoppers
Identification tips: Nymphs feed on foliage, most often on the edges of fields near pasture areas or roadsides.

Thrips
Identification tips: Adults are tiny and narrow with fringed wings; immature thrips are wingless and yellowish; look for stunted plants and distorted leaves.