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Published online by Cambridge University Press: 31 May 2012
An increment borer (5 mm core diam.) was adapted for collecting recently attacking ambrosia beetles, Trypodendron retusum LeC., in trembling aspen, Populus tremuloides Michx. Although increment borers have been used to collect stem nematodes and stem fungi (Cordell and Stombaugh 1966), this appears to be the first use for insect collection. Previously, ambrosia beetles were collected using a hatchet and knife which was tedious and injured many specimens.