Synergism Between Ethanol and Conifer Host Volatiles as Attractants for the Pine Weevil, Hylobius abietis (L.) (Coleoptera: Curculionidae)

Abstract

Field tests using pitfall traps were conducted to test the relative attractiveness of conifer volatiles and ethanol to Hylobius abietis (L.). Traps baited with stems of Scots pine, Pinus sylvestris L., plus ethanol caught about twice as many weevils as those with stems alone. When tested separately, α-pinene, a terpene blend, and ethanol were much less attractive than ethanol combined with any of the terpene treatments.