Phymatodes testaceus Classification Family Cerambycidae > Subfamily Cerambycinae > Tribe Callidiini > Genus Phymatodes Diagnostic Features of Larvae Larva. No genal setae; ocelli a black spot beneath chitin, not protuberant; last joint maxillary palpi little longer than second, equal to last labial; first and second joints of antennae subequal, little longer than thick; striae of pronotum coarse, irregular, merging into a granulate band behind; ampullae shining, coarsely granulate, these granules flattened into tiny plates; faintly marked with a transverse and two lateral impressions; pleural discs distinct on first, second, third, fourth, fifth, and sixth abdominal segments; legs four-jointed; texture shining, granulate. Adapted from Craighead (1923). Biology and Economic Importance The larva mines chiefly in the bark of oak (Quercus) and is often of economic importance in the tan-bark industries. In thin bark it burrows between the bark and the wood, making a short curved pupal cell in the sapwood. It pupates in the early spring. Adapted from Craighead (1923). Selected References to Larvae Specimens Craighead, 1923