Neoclytus caprea Classification Family Cerambycidae > Subfamily Cerambycinae > Tribe Clytini > Genus Neoclytus Diagnostic Features of Larvae Larva. Form robust, short, contracted, tapering to last few segments, then dilated; integument firm, rather dull, rather densely covered with fine lemon-white, silky hairs. Head trapezoidal, widest behind mouth-frame, strongly corneous and much thickened; labrum thick, subconvex, orbicular, hairs few and rather long; mandibles short, piceous, shining, narrowed at apex, rather abruptly constricted on outer face above basal piece; first and second antennal joints subequal, third shorter; ocellus one, distinct, contiguous with base of antennae; gena neither shouldered nor setose; pleurostoma and anterior edge of hypostoma very thick, swollen and somewhat protuberant; ventral mouth-parts rather strongly coriaceous, joints of maxillary palpi subequal, basal transverse, last shorter than last labial; process of palpifer minute. Prothorax thick, trapezoidal; posterior pronotum dull, smooth and finely reticulated and alutaceous to finely granulate on posterior edge; sternum finely granulate, dull along posterior margin, but divided by median band of hairs. Legs minute, consisting of a single joint and a soft spine. Ampullae broad, flat, oval, dorsal and ventral surfaces straight and parallel, dull, finely granulate, not distinctly marked except by a few lenticular impressions. Pleural discs not distinct. Spiracles narrowly oval, peritreme not thick. Pupa: Unarmed except on second to seventh abdominal terga which bear minute chitinous points, becoming more numerous, larger, and more acute posteriorly. Adapted from Craighead (1923). Biology and Economic Importance This species illustrates the extreme in the wood-boring activity in this genus. It mines very little under the bark and completely honeycombs the sapwood and outer heartwood. The mines are tightly packed with granular frass. One generation occurs each year. It often becomes of considerable economic importance. It has been collected throughout the United States and eastern Canada in Fraxinus. Adapted from Craighead (1923). Selected References to Larvae Specimens Craighead, 1923