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General Description

Larvae have few spines, their bodies change from yellow to black to green throughout their instar stages. A diagram from Lawson shows their bodies as being spotted. Their head capsules are dorso-ventrally flat and usually darker than their bodies (Lawson 1950). Two known colour morphs of adults exist, one metallic green and one black with a metallic blue sheen (McCracken 1906). No difference appears to exist between the two adult colour morphs (Lawson 1950), however all beetles start out as black, while those with a recessive gene later develop green colouration (McCracken 1906).They have fewer tiny depressions spread over the head and thorax compared to the elytra which are very punctate. They are 4-5 mm in length and are oblong oval in shape. Their sternites, antennae, and legs are purplish black (Blatchley 1910).

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© University of Alberta Museums

Source: University of Alberta Museums

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