Dorcaschema alternatum Classification Family Cerambycidae > Subfamily Lamiinae > Tribe Dorcaschematini > Genus Dorcaschema Diagnostic Features of Larvae Larva. Distinguished from Dorcaschema nigrum by the compressed chitinous protuberance on the dorsal anal lobe; the hairs on the body are finer; the labrum is slightly longer and less sparsely ciliate; posterior area of pronotum very finely and irregularly striate to reticulate; tubercles of ampullae less confluent. Pupa. Form as in adult; remarkably glabrous, except for eight to ten small chitinous points on posterior edge of dorsal abdominal segments; last segment bearing a conical, acute reflexed spine. 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