Insect Management Handbook

Pieris rapae

Many species

Pest description and crop damage Grasshoppers eat irregular holes in leaf tissue and can defoliate plants in high numbers, especially when swarming. Damage tends to be greatest on the edges of fields near pasture areas or roadsides. When wild grasses and other plants become dry, grasshoppers migrate to irrigated croplands.

Scutigerella immaculata

Pest description and crop damage Garden symphylans are also called garden centipedes. When fully grown, they are not more than 0.32 inch in length, have 15 body segments, and 11 or 12 pairs of legs. They are slender, elongated, and white with prominent antennae.

Includes

Epitrix spp.
Phyllotreta cruciferae

Forficula auricularia

Plutella xylostella

Includes

Black cutworm (Agotis ipsilon)
Variegated cutworm (Peridroma saucia)

Western spotted cucumber beetle (Diabrotica undecimpunctata)
Western striped cucumber beetle (Acalymma trivittatum)

Helicoverpa zea

Leptinotarsa decemlineata