Asemum nitidum Classification Family Cerambycidae > Subfamily Spondylidinae > Tribe Asemini > Genus Asemum Diagnostic Features of Larvae Larva. Distinguished from Asemum striatum by the larger size of matured larvae, the finer asperities on the prothorax and ampullae, and the longer genal setae. The caudal spines consist of two very short, blunt tubercles separated a distance equal to about twice their height. Pupa: Distinguished from that of A. striatum by the coarser points on the pronotum, as well as on the metanotum. All abdominal segments bearing much coarser chitinous points, closely and irregularly disposed. Caudal spines nearly contiguous at tip. The larva of this species has been collected from Abies, Pseudotsuga, and Pinus. It is more of a heartwood borer than A. striatum. Adapted from Craighead (1923). Biology and Economic Importance Biology and economic importance for this taxon coming soon. Selected References to Larvae Specimens Craighead, 1923