Douglas-fir tussock moth, Orgyia pseudotsugata Order: Lepidoptera Family: Erebidae Description Young larvae of the Douglas-fir tussock moth are black with long body hairs. Mature larvae are around 3.5 cm (1.4 inch) in length and develop brightly colored tufts of hair....
Elm leaf beetle, Xanthogaleruca luteola Order: ColeopteraFamily: Chrysomelidae Description Elm leaf beetle is a pest of elm trees and a household nuisance when adults seek shelter during winter months. Larvae feed on the underside of leaves and are historically common...
Brownheaded ash sawfly, Tomostethus multicinctus Order: Hymenoptera Family: Tenthredinidae Description Adults of the brownheaded ash sawfly resemble small dark black wasps that do not sting. They have a saw-like ovipositor used to lay eggs in the edge of developing...
Spider Mites in Shade Trees Order: Acari Family: Tetranychidae Description Spruce spider mite, Oligonychus ununguis The spruce spider mite is a native pest of spruce and juniper. Adults are dark green or black and are extremely small at around 0.6 mm in length. When...
