Psyrassa unicolor Classification Family Cerambycidae > Subfamily Cerambycinae > Tribe Elaphidiini > Genus Psyrassa Diagnostic Features of Larvae Larva. Form elongate, slender; integument thick, dull, finely granulate, sparsely covered with long, fine, whitish hairs; color white. Head and mandibles similar to those of Aneflomorpha subpubescens; first and second joints of antennae equal; a long seta above antennae and one behind ocellus; basal joint of maxillary palpi transverse, beadlike, second and third subequal, third shorter than last labial; anterior edge of hypostoma protuberant, regularly carinate; thorax and abdomen as Aneflomorpha subpubescens, except that the ampullae are less protuberant, and the ventral ampullae are not so distinctly divided by longitudinal, shallow impressions. Pleural discs distinct on first and second abdominal segments. Spiracles about size of ocellus, orbicular. Adapted from Craighead (1923). Biology and Economic Importance Members of this tribe are known from various host plant families. Species of this tribe are potentially invasive outside their native range. Selected References to Larvae Specimens Craighead, 1923