USDA UNM MSB Purdue PERC Lucid
Longicorn ID: Tool for Diagnosing Cerambycidae Subfamilies and Tribes
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Malacopterus tenellus

Classification Diagnostic Features of Larvae
  • Larva. Form elongate, cylindrical, slightly depressed; integument thin, shining, very sparsely covered with short brownish-yellow hairs. Head subtrapezoidal, slightly tapering in front; mouth-frame corneous, smooth, dark castaneous; clypeus and labrum fleshy, latter orbicular, shortly stalked, densely ciliate; mandibles tapering, longer than basal width, smooth, shining, basal piece reddish brown, about one half length of apical piece, latter piceous, having a short sulcus on outer face; antennae rather thick, joints subequal, supplementary minute; minute ocelliform tubercle; gena receding, not shouldered, sparsely haired. Ventral mouth-parts fleshy, a chitinous band across stipes; ultimate joint of maxillary palpi much longer than penultimate, slightly larger than last labial; process of palpifer minute. Prothorax subtrapezoidal, with four chitinized tergal and two sternal plates; pronotum shining, length about two-thirds width, posteriorly finely reticulated to very finely granulate, this area slightly raised and extending medially forward, median suture impressed anteriorly, faintly keeled posteriorly; sternal region reticulated, shining ventro-lateral sutures impressed, convergent anteriorly. Legs short, joints globular, basal largest, exclusive of tarsus shorter than maxillary palpi. Abdominal segments elongating caudally; ampullae transverse, oval, prominently projecting, dull, finely granulate, each with a deep lateral impression and a shallow median longitudinal furrow, transverse impressions indistinct. Pleural disc distinct on first segment, faint on second third and fourth. Spiracles narrow, elliptical, peritreme thin. Pupa: Form similar to that of adult; essentially glabrous except for a few conical chitinous tipped points on disc of pronotum; also recurved points on first to eighth abdominal terga, most numerous on second, third and fourth; anal lobes bearing two or three recurved points. Adapted from Craighead (1923).
Biology and Economic Importance
  • Biology unknown for members of this tribe. Species of this tribe are potentially invasive outside their native range.
Selected References to Larvae Specimens

idtools.org     Longicorn ID images on Bugwood ITP Node
Longicorn ID last updated 2020  E.H. Nearns, N.P. Lord, S.W. Lingafelter, A. Santos-Silva, K.B. Miller, & J.M. Zaspel