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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
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