Insect Management Handbook

Includes black vine weevil (Otiorhynchus sulcatus)

Description and damage Adults are hard-bodied weevils with a broad snout and elbowed antennae. The black vine weevil is black in color with tufts of yellow scales in rows along the top of the beetle. They are visible by flashlight at night straddling the leaf as they feed. Feeding results in ragged leaf edges. Because leaves are "evergreen," damage accumulates over time.

Foxglove aphid (Aulacorthum solani) and others

Badly infested grain may require fumigation (release of poisonous gas into the stored grain mass). Fumigation of large-volume storage facilities is a specialized and potentially hazardous procedure. Contact local experts for guidance and materials.

Grain fumigants

Diabrotica undecimpunctata undecimpunctata

Pest description and crop damage Snails and slugs are nocturnal and generally feed during the night damaging many varieties of plants and plant seedlings. They inhabit damp, moist areas around decaying refuse, organic matter, and hide at the base of growing plants. Their presence can be detected by the shiny trails left on the soil surface. Damage is to new seedlings and primarily to hay grown west of the Cascades.

Sitona lineatus

Pest description and crop damage Adults are grayish brown weevils about 0.16 inch in length with three faint stripes on the thorax. They appear in large numbers in spring and sometimes late summer.

Philaenus spumarius

Includes several species, especially Melanoplus spp.

Includes

Army cutworm (Euxoa auxiliaris)-adults are called "miller moths"
Clover cutworm (Anarta trifolii)
Dingy cutworm (Feltia jaculifera)
Granulate cutworm (Feltia subterranea)
Redbacked cutworm (Euxoa ochrogaster)
Variegated cutworm (Peridroma saucia)

Sitona hispidulus

Pest description and crop damage Adults are grayish weevils about 0.16 inch in length. Larvae feed on fibrous roots and chew cavities in main roots but usually do not significantly reduce yield. For additional information, see: https://drive.google.com/file/d/1HN0Q1ZMHLPELWMTjSQQhldxyWo85XX-7/view

Management-chemical control (Adult weevils only)