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Nupserha basalis
Classification
Diagnostic Features of Larvae
- Mature larva. Form cylindrical, with segments rather short. Length up to 17 mm; maximum breadth (at prothorax) 3.9 mm. Head thick, subovate in cross section, widest across posterior limit of frons, with sides strongly converging posteriorly; antennal foramen closed behind; mouthframe ferruginous; six epistomal setae present. One pair of ocelli present; lens round, very strongly protuberant; pigmented spot distinct; one pair of vestigial ocelli present posterior to true ocelli. Mandibles short, truncate apically. Clypeus with two to three pairs of lateral setae. Hypostoma testaceous, with front margin narrowly ferruginous, with a transverse row of fine setae; sutures slightly curved, pitchy; gula indiscernible. Labrum slightly transverse. Antenna 2-segmented; segment 2 bearing a conical, hyaline process. Maxillary palp 3-segmented; segment 3 slightly shorter than segment 2; lobe short and stout. Labial palpi with segment 2 much shorter than segment 1. Mentum distinct from submentum. Prothorax strongly obliquely slanting; pronotum very deep, sublateral, linear impressions; posterior part with fine asperities which decrease in size towards hind margin. Abdomen with all segments rather strongly transverse. Each dorsal ampulla moderately protuberant, feebly bilobed, shining, non-tuberculate and glabrous. Tergite 9 with a median dome-shaped area which is more strongly sclerotized and slightly more darkly pigmented than the surrounding cuticle. Anus trilobed; lobes compact. Pleural tubercles broadly oval, bearing one short and two long setae; sclerotized pits absent. Legs present; 3-segmented (distinctly visible with a 15X lens). Spiracles with peritreme rather thick and narrowly oval. Adapted from Duffy (1957).
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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