Megasemum asperum Classification Family Cerambycidae > Subfamily Spondylidinae > Tribe Asemini > Genus Megasemum Diagnostic Features of Larvae Larva. Form and pubescence as in Arhopalus productus. Caudal spines sharply triangular, flat, concave posteriorly, situated on a common projecting base. Epistoma abruptly declivous; second antennal joint longer than third; mandibles more robust, dorsal plate strongly striate. Asperities of pronotum and ampullae similar in texture to those of Asemum striatum. Pleural tubercle rather densely hairy. Adapted from Craighead (1923). Biology and Economic Importance Biology and economic importance for this taxon coming soon. Selected References to Larvae Specimens Craighead, 1923