Trachysida mutabilis Classification Family Cerambycidae > Subfamily Lepturinae > Tribe Lepturini > Genus Trachysida Diagnostic Features of Larvae Larva. Head, anterior perimeter dull, very finely punctured; hairs very short; labrum subrectangular, one and one-half times wider than long, anterior edge rounded from middle, flattened in front; mandible short, little longer than width of condyles, dorsal angle shortly toothed; last joint of maxillary palpi conical, acute, much longer than transverse second; three ocelli. Spiracles sub-orbicular, strongly chitinized. Abdomen and thorax as in Metacmaeops vittata. Adapted from Craighead (1923). Biology and Economic Importance The larvae breed in a variety of dead hardwoods. They have been collected from Quercus, Betula, Acer, and Castanea. They pupate in March and early April. Range, throughout the eastern US and Canada. Adapted from Craighead (1923). Selected References to Larvae Specimens Craighead, 1923