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Dectes sayi
Classification
Diagnostic Features of Larvae
- Larva. Form slender, cylindrical, slightly curved; integument very finely granulate, shining, sparsely clothed with fine whitish hairs. Head rather thick, exposed portion bearing very long hairs; sides narrowing very slightly posteriorly; labrum about twice as wide as long, widest at base, shortly and coarsely ciliate; mandible rather short, about one and one-half times as long as at base, apex acute, molar angle sharply toothed; antennal ring open behind; one pair of ocelli. Ventral mouth-parts fleshy; mentum distinct, narrow, transverse; last joint of maxillary palpi conical, longer than second, shorter than last labial, basal joints transverse; anterior margin of hypostoma fused with submentum, not distinct in middle; gula not distinct. Prothorax thick, rectangular; pronotum posteriorly very finely rugulose, anteriorly smooth, shining, having a very sparse anterior border of hairs; eusternum not distinct, finely reticulated, very sparsely haired; sternellum smooth, shining. Mesonotum smooth, metanotum, mesosternum, and metasternum faintly tuberculate. Abdomen cylindrical; ampullae strongly protuberant, with a strong median impression, laterally tuberculate in two indistinct rows; epipleurum protuberant only on last three segments, tubercle narrowly oval, having several fine setae and no distinct pits. Spiracles orbicular, small, not strongly chitinous rimmed. No caudal armature, ninth segment sparsely fringed with hairs. Pupa. Form as in adult; remarkable for all absence of spines on head and thorax merely fine setae; abdominal terga armed with a few chitinous tipped papillae, growing more numerous on posterior segment, anal segment tipped with six larger dorsal and smaller lateral points. Adapted from Craighead (1923).
Biology and Economic Importance
- Members of this tribe are known from various host plant families. Species of this tribe are potentially invasive outside their native range.
Selected References to Larvae Specimens
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