Compsocerus violaceus Classification Family Cerambycidae > Subfamily Cerambycinae > Tribe Compsocerini > Genus Compsocerus Diagnostic Features of Larvae Mature larva. Head transverse, with sides diverging posteriorly; frontal sutures indistinct; genae bearing very long, slightly curved, reddish setae. Labrum with setae arising from ferruginous basal discs which give a spotted appearance. Mandible smooth, with a longitudinal impression on outer face. Antenna salient, slender, with basal membrane rather elongate; segment 3 at least four times as long as basal width; supplementary process less than one-quarter the length of segment 3. One pair of ocelli present; lens large, round and very strongly convex and protuberant; pigmented spot distinct. Maxilla with segment 3 of palp distinctly longer than segment 2; dorso-external process of palpifer short. Hypostoma smooth, sparsely setose. Gula slightly raised. Prothorax with posterior part of pronotum finely longitudinally striate. Abdomen with dorsal ampullae on segments 1-6 each bearing a single shallow transverse furrow and a pair of longitudinal, lateral furrows, the area enclosed by these furrows being completely and rather coarsely granulate; tergite 7 with a single transverse, much deeper furrow, the surrounding cuticle being non-granulate. Anal lobes sparsely setose. Pleural discs indistinct. Legs 4-segmented; much longer than maxillary palp. Spiracles with peritreme pale, rather thick, broadly oval, and without marginal chambers. Length 20 mm; maximum breadth 4.75 mm. Adapted from Duffy (1960). 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 Duffy, 1960