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Megacyllene robiniae (Förster, 1771) - (locust borer)
This longhorn beetle breeds in the trunks of live black locust trees (Robinia pseudoacacia) in eastern and central parts of North America. Young and stressed trees are preferred (Harman & Harman, 1990) and the attacks may lead to the death of the trees.
Adults often visit the flowers of goldenrod (Solidago) to feed on pollen. Females lay their eggs in late summer or autumn. The larvae overwinter under the bark and bore into the wood the following year. They complete their development during the summer. The adult beetle is 15-20 mm long, black with narrow yellowish bands and a W-shaped band across the base of the elytra. The legs are brownish.
|• English:||locust borer|
|• Français:||cyllène du robinier|