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Stromatium barbatum
Classification
Diagnostic Features of Larvae
- Mature larva. Length up to 38 mm; breadth (at prothorax) 9.5 mm. Head subquadrate, somewhat wider behind middle, the posterior margin with a very slight median emargination; shouldered behind each antenna. Genae with setae short and sparse. Front margin of frons weakly concave and not strongly pigmented. Hypostoma with front margin distinctly tuberculate, the tubercles oval and often brownish. Gula narrow, not raised. One pair of ocelli present; lens oval, indistinct; pigmented spot usually indiscernible. Antenna strongly protuberant, with a Jong basal membrane; segment 2 cylindrical, more than one and a half times as long as segment 3; segment 3 wider in basal half, tapering apically; supplementary process elongate, conical. Labrum moderately transverse, with anterior margin straight medially and with numerous setae. Maxilla and labium with brownish sclerotization basally to the segment; lobe of maxilla broad, fleshy. Prothorax with pronotum subrectangular, with anterior area narrowly yellowish, shining; posterior area elevated, soft, striate, except for a posterior, finely reticulate area. Postnotal fold present. Eusternum not distinctly limited; shining, rugulose, with a weak, oblique depression on each side. Abdomen with ampullae non-tuberculate and with surface reticulate and wrinkled; transverse furrows indistinct. Legs well developed. Spiracles with peritreme oval and pale. Adapted from Duffy (1957).
Biology and Economic Importance
- Members of this tribe are known from various host plant families and at least one genus (Trichoferus) is considered economically important. Species of this tribe are potentially invasive outside their native range. More information is available at the CAPS website.
Selected References to Larvae Specimens
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