Fact Sheets

Common Insects and Mites: Aphids

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Aphids categories: Common Insects and Mites Common Problems revision date: 2022-11-23 01:00 Aphid colonyPhoto by: Unknown Biology Many species of aphids attack ornamental plants. Some are fairly host-specific, while […]

Common Insects and Mites: Asian lady beetle

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Asian lady beetle categories: Common Insects and Mites Common Problems revision date: 2024-07-22 01:29 Cluster of Asian lady beetlesPhoto by: A.L. Antonelli Biology Common in Japan, Korea, and other […]

Common Insects and Mites: Bark beetles

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Bark beetles categories: Common Insects and Mites Common Problems revision date: 2022-11-23 12:53 Bark beetle larval galleriesPhoto by: A.L. Antonelli Biology One or more species of bark beetle attack […]

Common Insects and Mites: Brown marmorated stink bug

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Brown marmorated stink bug categories: Common Insects and Mites Common Problems revision date: 2022-11-23 12:50 Adult brown marmorated stink bugPhoto by: D.R. Lance, USDA-APHIS Biology The brown marmorated stink […]

Common Insects and Mites: Brown soft scale

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Brown soft scale categories: Common Insects and Mites Common Problems revision date: 2022-11-23 12:48 Brown soft scalesPhoto by: R.S. Byther Biology Brown soft scale appears as a small, brown […]

Common Insects and Mites: California gallfly

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: California gallfly categories: Common Insects and Mites Common Problems revision date: 2022-11-23 12:46 “Oak apples” caused by California gallflyPhoto by: R.S. Byther Biology The gall of this cynipid wasp […]

Common Insects and Mites: Conifer aphids

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Conifer aphids categories: Common Insects and Mites Common Problems revision date: 2022-11-23 12:29 Giant conifer aphids on pinePhoto by: A.L. Antonelli Biology Conifer aphids are often large black aphids […]

Common Insects and Mites: Cottony camellia scale

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Cottony camellia scale categories: Common Insects and Mites Common Problems revision date: 2022-11-23 12:27 Cottony camellia scale on holly leavesPhoto by: A.L. Antonelli Biology The cottony camellia scale is […]

Common Insects and Mites: Cutworms and loopers

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Cutworms and loopers categories: Common Insects and Mites Common Problems revision date: 2022-11-23 12:20 Climbing cutworm, dark brown and hairlessPhoto by: K. Grey Biology Cutworms and loopers are the […]

Common Insects and Mites: Earwigs

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Earwigs categories: Common Insects and Mites Common Problems revision date: 2024-06-12 08:53 Earwigs feeding on cucumberPhoto by: T. Hudson Biology Earwigs are reddish-brown insects about 3/4 inch or less […]

Common Insects and Mites: Eriophyid mites

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Eriophyid mites categories: Common Insects and Mites Common Problems revision date: 2022-11-23 12:12 Eriophyid mites causing twisted pine needlesPhoto by: L.J. du Toit Biology Eriophyid mites are very tiny, […]

Common Insects and Mites: Exotic longhorned beetles

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Exotic longhorned beetles categories: Common Insects and Mites Common Problems revision date: 2022-12-16 12:00 Asian longhorned beetle adultPhoto by: Kenneth R. Law, USDA APHIS PPQ Biology Native longhorned beetles […]

Common Insects and Mites: Fall webworm

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Fall webworm categories: Common Insects and Mites Common Problems revision date: 2022-11-22 04:20 Fall webworm and leaf damagePhoto by: S.J. Collman Biology Fall webworm caterpillars feed on the foliage […]

Common Insects and Mites: Inchworms

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Inchworms categories: Common Insects and Mites Common Problems revision date: 2022-11-22 04:13 Winter moth larva (inchworm) and damagePhoto by: A.L. Antonelli Biology Inchworms or measuring worms (sometimes called spanworms) […]

Common Insects and Mites: Leafhoppers

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Leafhoppers categories: Common Insects and Mites Common Problems revision date: 2022-11-22 04:05 Leafhoppers on maple leafPhoto by: A.L. Antonelli Biology Leafhoppers are sucking pests related to aphids. They can […]

Common Insects and Mites: Leafminers

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Leafminers categories: Common Insects and Mites Common Problems revision date: 2022-11-22 04:00 Rose leafminer damagePhoto by: A.L. Antonelli Biology Leafminers are common on many plants; however, they are fairly […]

Common Insects and Mites: Leafrollers

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Leafrollers categories: Common Insects and Mites Common Problems revision date: 2022-11-22 03:55 Leafroller damage showing rolled leafPhoto by: A.L. Antonelli Biology Leafrollers are the caterpillar (larval) stage of several […]

Common Insects and Mites: Lecanium scale

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Lecanium scale categories: Common Insects and Mites Common Problems revision date: 2022-11-22 03:49 Lecanium scales on twigPhoto by: R.S. Byther Biology Lecanium scales are a complex of scale species […]

Common Insects and Mites: Oystershell scale

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Oystershell scale categories: Common Insects and Mites Common Problems revision date: 2022-11-22 03:47 Severe oystershell scale infestation on twigPhoto by: Unknown Biology Oystershell scale is one of many armored […]

Common Insects and Mites: Pamphilid sawflies

WSU Extension programs and employment are available to all without discrimination. Evidence of noncompliance may be reported through your local Extension office. Common Insects and Mites: Pamphilid sawflies categories: Common Insects and Mites Common Problems revision date: 2022-11-22 03:46 Pine pamphilid sawfly larvaPhoto by: A.L. Antonelli Biology Sawflies are primitive wasps that do not sting. […]