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Abstract

Flight intercept traps of various designs (multiple funnel, panel or crossvane) were tested to determine their effectiveness in capturing Monochamus beetles. The retention of insects in crossvane traps with the collection receptacle left dry, dry with insecticide or partially filled with soapy water, and the efficacy of treating the crossvane panels with a slippery surfactant was investigated. Captures of female (but not male) Monochamus scutellatus scutellatus (Col., Cerambycidae) were significantly higher in custom-made crossvane traps than two commercially available funnel or panel traps. Male and female M. mutator responded equally to traps of all designs, as did three species of Buprestidae (Buprestris maculativentris, Dicerca tenebrosa and Chalcophora virginiensis). Dry crossvane traps with or without insecticide were less effective than wet traps in retaining insects. Adding a surfactant to increase the slipperiness of the trap panels generally resulted in significantly higher trap catches than untreated traps.