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Maple (Acer)-Leafcutting bee Numerous species in the family Megachilidae Description and crop damage Leafcutting bee activity is noted by the uniform oval and round pieces cut from the edges of leaves. The adult bee is about 0.4 inch in length, black with ...

Maple (Acer)-Maple tip moth (Maple twig borer) Proteoteras aesculana Description and damage This moth has a wingspan of 0.5 to 0.7 inch and is dark olive-green with yellow and gray mottling. The mature larvae are about 0.4 inch in length with a whitish bo ...

Maple (Acer)-Oystershell scale Lepidosaphes ulmi Pest description and damage Scale insects are small (less than 0.125 inch in length) soft insects that live beneath waxy scales. These insects are often identified by the shape and size of their scales, the ...

Maple (Acer)-Rose leafhopper Includes Edwardsiana rosae Pest description and damage Rose leafhoppers are small (0.14 to 0.16 inch in length), active, whitish-green insects which run backwards, forwards or sideways when disturbed. The nymphs (immature) are ...

Maple (Acer)-Satin moth Leucoma salicis Pest description and damage The adult moth (over 1-inch wingspan) is satiny white with black markings on the legs. The attractive larvae are approximately 2 inches long when grown and reddish brown with double white ...

Maple (Acer)-Western flower thrips Frankliniella occidentalis Description, biology and damage Adults are yellow to yellow-brown, 0.05 inch in length, narrow, with wings. Larvae are smaller and wingless. Both stages feed on developing growth causing leaf d ...

Mountain ash (Sorbus)-Aphid Includes Green apple aphid (Aphis pomi) and others Pest description and damage Several species of aphids can become problems as foliar, stem, flower, bud bark or root feeding pests on broad-leaved trees. Aphids tend to be small ...

Mountain ash (Sorbus)-Apple-and-thorn skeletonizer Choreutis pariana Pest description and damage Larvae are 0.5 inch in length, yellowish to greenish, with black spots and a yellow-brown head. Pupae are yellow to brown with a white silken cocoon. The larv ...

Mountain ash (Sorbus)-Cherry bark tortrix Enarmonia formosana Pest description and damage Cherry bark tortrix is a pest of most woody ornamental trees and shrubs in the family Rosaceae. The larvae are 0.33 to 0.4 inch in length, pale gray to flesh-color w ...

Mountain ash (Sorbus)-Pearleaf blister mite Eriophyes (Phytoptus) pyri Pest description and damage The pearleaf blister mite is a very tiny (less than 0.006 inch in length), white, sausage-shape eriophyid mite. They are seldom visible to the unaided eye. ...