Common Insects and Mites: Eriophyid mites categories: Common Insects & 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, white or yellowish, worm-like, and spindle-shaped. Their bodies have definite annulations or rings, and only two pairs of legs directly behind the […]
Common Insects and Mites: Exotic longhorned beetles categories: Common Insects & 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 (Cerambycids) feed in weakened, dying, or recently dead or downed timber, not healthy living trees; however, non-native species such as the Asian […]
Common Insects and Mites: Fall webworm categories: Common Insects & 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 of a variety of trees and shrubs. Conspicuously hairy, they appear rusty tan with a dark, almost black, body color. Some populations […]
Common Insects and Mites: Inchworms categories: Common Insects & 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) belong to a family of moths called geometers and feed largely on ornamentals (e.g., rhododendron) and native trees and shrubs. There are […]
Common Insects and Mites: Leafhoppers categories: Common Insects & 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 be quite colorful, but this is lost on their small size (up to about 1/4 inch). As implied by their name, these […]
Common Insects and Mites: Leafminers categories: Common Insects & 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 host-specific. If you know the plant species where a leafminer is feeding, you can name the leafminer based on the plant species […]
Common Insects and Mites: Leafrollers categories: Common Insects & 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 different moth species. These rather small caterpillars vary in color from brownish to pale or dark green. They generally have a shiny […]
Common Insects and Mites: Lecanium scale categories: Common Insects & 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 ranging from variously mottled to all brown. The mature female scales look like bumps on twigs, while the mature males are flat, […]
Common Insects and Mites: Oystershell scale categories: Common Insects & 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 scales that attack landscape plants. They are usually found on the bark of trunks, branches, and twigs. Rather small and flat with […]
Common Insects and Mites: Pamphilid sawflies categories: Common Insects & 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. There are several families including pamphilids. Most of them are herbivores and while some feed on deciduous trees, most of the species […]