 |
Nitakeris nigricornis
Classification
Diagnostic Features of Larvae
- Mature larva. Length up to 51 mm; maximum breadth (at prothorax) 6.1 mm. Abdomen with segments 4-7 quadrate. Segment 10 with dorsal anal lobe (viewed dorsally) much more strongly protuberant.
Pupa. Length up to 32 mm.; maximum breadth 7.2 mm. Head entirely visible from above, feebly excavate and with three setae opposite base of each antenna; front with four setae near mesa! margin of each eye; clypeus with a transverse impression and about six setae across base. Antennae extending as far as abdominal segment 2, where they are strongly curved downward and recurved to terminate alongside head. Eyes moderately convex, glabrous. Mandibles each with a single seta near middle of outer face. Labrum triangular, glabrous. Pronotum bearing several scattered setae. Mesonotum and scutellum bearing two groups of three to four setae. Metanotum bearing several scattered setae on each side of scutellar groove, which is narrow, very distinct and bears a few minute setae. Elytra and wings extending to abdominal segment 4. Abdomen with tergites each with a transverse group of short, stout, blunt, ferruginous spines (each with a subapical seta). Tergites 8 and 9 with a transverse row of about eight minute spines, each with a long subapical seta. Sternites 4-6 each with a median oval, protuberant area which is feebly spiculate and wrinkled. Pleura moderately protuberant on segments 5-8 and each with one to three short spines. Legs with hind femora extending to abdominal segment 4; tibiae directed posteriorly. Functional spiracles present on abdominal segments 1-5; peritreme rather narrowly oval, very thin, but surrounded by a thick tuberculate rim and slightly raised above general level of cuticle. 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
| |
