Tragidion coquus Classification Family Cerambycidae > Subfamily Cerambycinae > Tribe Trachyderini > Genus Tragidion Diagnostic Features of Larvae Larva. Form elongate, rather slender; anterior edges of hypostoma finely carinate and considerably protruding at edge of gula; mandible having a sulcus on outer face; labrum elongate, tapering anteriorly though broadly rounded; first joint of antennae shortest, transverse; posterior area of prothorax strongly embossed, regularly coarsely striate to more finely and pinnately so behind; lateral plates absent; presternal plates transverse, nearly contiguous; eusternal glabrous spots triangular, separated. Mesonotum and metanotum dull, granulate; ampullae alutaceous to extremely finely subtuberculate, distinctly divided in middle. Spiracles broadly oval, large. Adapted from Craighead (1923). Biology and Economic Importance Biology unknown for members of this tribe. Species of this tribe are potentially invasive outside their native range. Selected References to Larvae Specimens Craighead, 1923