|scientific name Chrysobothris femorata |
common name Flatheaded Appletree Borer
June, July and August.
The most striking feature when looking at theses beetles is the vivid green front of the head. A faint chevron shaped callosity is on the centre of the frons. The shape of the emargination on the clypeus is unique among Alberta Chrysobothris species. Ventrally the body is black with a coppery to brassy lustre. Each elytron has 4 longitudinal costae interrupted by two shallow foveae.
Similar to other Chrysobothris species, in that adults oviposit into cracks and crevices on the bark. larvae hatch out, boring into the bark, feeding on the phloem and outer sapwood. Larvae over-winter in pupal cells constructed in the outer wood, pupating in the following spring and emerging as adults in early summer. In southern climates the life cycle takes one year. Bright (1987) suggests a longer development time in Canada.
Hosts include a wide variety of deciduous trees, including maple, poplar and willow (Fisher 1942, Bright 1987). In Alberta the adults have been associated with aspen.
These beetles are found from British Columbia to New Brunswick and south to Mexico (Fisher 1942, Bright 1987).
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