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Asian longhorned beetle signs

Asian longhorned beetle signs

Asian longhorned beetle (Anoplophora glabripennis) adults (A) have a black body with white spots and can be up to 4 centimeters long, with black and white banding on the antennae, which can be twice the length of the body for males and about 1.2 times the length of the body for females. Signs of the beetle’s presence include oviposition sites chewed into bark and round emergence holes made by adults when they exit the tree (B). Oviposition sites often have a jagged edge created by the adult mandibles chewing the wood (C). Larval feeding can cause “weeping” from oviposition sites (D). Frass and/or wood shavings may also appear below larval feeding sites (E). All trees pictured are red maple. (Photos A, B, D, and E by Dave Coyle, Ph.D. Photo C by Donald Owen, California Department of Forestry and Fire Protection, Bugwood.org)

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