Abstract
In recent years, several invasive woodborers (Coleoptera: Cerambycidae) have been found in Japan. Aromia bungii is a worldwide important pest of fruits and ornamental species of the genus Prunus. It invaded Japan in the early 2010s and now causes heavy damage to stone fruit trees. Anoplophora glabripennis and Apriona swainsoni are destructive pests of street, ornamental and horticultural trees. The first step in intercepting these beetles is to detect their presence early in their infestation, as accurate identification is crucial for their management. Ejected frass is a major sign of infestation and likely holds information on the insect. We focused on chemicals in both larvae and frass, and conducted a GC–MS analysis of these three invasive beetles and the native Anoplophora malasiaca. In all four species, 4 or 5 species-specific hydrocarbons were detected in both larvae and frass. These results indicate that analysis of hydrocarbons in frass could allow definitive detection of invasive wood-boring pests.
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