Stimulatory beetle volatiles for the Asian longhorned beetle, Anoplophora glabripennis (Motschulsky)

Abstract

Two male-specific beetle volatiles were found that elicited strong gas chromatographic-electroantennographic responses from both sexes of Asian longhorned beetle adults, Anoplophora glabripennis. The secretion consisted of a ∼1:1 (v/v) blend of functionalized dialkyl ethers, 4-(n-heptyloxy)butanal and 4-(n-heptyloxy)butan-1-o1. These compounds are chemically unusual natural products that are previously unknown from insects. Laboratory olfactometer studies showed that a blend of 10 μg of each synthetic compound on a filter paper strip was significantly attractive to ALB adults.