Poliaenus negundo Classification Family Cerambycidae > Subfamily Lamiinae > Tribe Pogonocherini > Genus Poliaenus Diagnostic Features of Larvae Larva. Distinguished from Ecyrus dasycerus by the coarser body hair and the absence of all tuberculation on the metanotum and ampullae, which are smooth and shining; last joint of maxillary palpi twice as long as second and mandible entirely granulate on outer face. 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