Xylotrechus nauticus Classification Family Cerambycidae > Subfamily Cerambycinae > Tribe Clytini > Genus Xylotrechus Diagnostic Features of Larvae Larva. Similar to Xylotrechus convergens, but legs wanting; labrum distinctly wider than long; first joint of antennae globular, equal to last, very much shorter than second. Adapted from Craighead (1923). Biology and Economic Importance Members of this tribe are known from various host plant families and several genera (e.g., Chlorophorus, Xylotrechus) are considered economically important. Species of this tribe are potentially invasive outside their native range. More information is available at the CAPS website. Selected References to Larvae Specimens Craighead, 1923