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; class Insecta, order Coleoptera)

Family of black or brown beetles, 3–20 mm long, with the head tucked under a rounded, rugose thorax. The elytra are sharply declined at the rear, with several projecting, horizontal spines. The antennae have a loose club. Larvae are curved, white, and fleshy, with a tiny head and enlarged thorax. They bore into felled or dying trees. There are many generations per year. There are 434 species, largely tropical.

Subjects: Zoology and Animal Sciences.

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