Insect Management Handbook

Includes

Cowpea aphid (Aphis craccivora)
Pea aphid (Acyrthosiphon pisum)

Scaptomyza apicalis

Dryland wireworm (Ctenicera pruinina)
Pacific coast wireworm (Limonius canus)
Sugarbeet wireworm (Limonius californicus)

Anaphothrips obscurus and others

Chrysoteuchia topiaria

Pest description and crop damage Moths have protruded snouts projecting from the head. Moths are about 0.33 inch in length with colorful iridescent scales on the wings and body. Eggs are scattered on plant crowns and the soil surface.

Brown-banded Arion slug (Arion circumscriptus)
Marsh slug (Deroceras laeve)
Gray garden slug (Deroceras reticulatum)

Pest description and crop damage Land mollusks that feed on various plants, damaging roots, crowns, leaves, and fruit.

Management-chemical control

Pest description and crop damage "Silvertop" is a condition in grasses in which the seed head turns white and dries off before some or all seeds develop. Silvertop is most noticeable in fine-leaf grasses (bluegrasses, bents, and fine fescues). It can be the result of weather, poor pollination, insect damage, and/or disease.

Dolerus nitens
Pachynematus setator

Pest description and crop damage Adults are predominantly black with brownish legs and markings on the body. They are not "true" flies, but are related to wasps. The female's abdomen is distended greatly at emergence, and the intersegmental membrane is translucent greenish blue. Eggs are small and green at first, but after about a week they turn yellow, and the plant tissue around them turns dark reddish brown.

Includes

Banks grass mite (Oligonychus pratensis)
Brown wheat mite (Petrobia lateens)
Winter grain mite (Penthaleus major)

Leptoterna dolabrata

Pest description and crop damage Meadow plant bug adults are dirty yellow and dark brown, narrow, about 0.375 inch in length, with either short or long wings. They have an unpleasant odor. They suck plant juices and reduce seed yields if abundant. They produce "silver top" by feeding on the stem just above the uppermost node.

Management-cultural control