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Metopocoilus quadrispinosus
Classification
Diagnostic Features of Larvae
- Mature larva. Similar to those of the Torneutini, but differing as follows. Head with three pairs of ocelli present. Abdomen with segment 10 bearing only two large tubercles. Segment 9 with a transverse row of six or more moniliform tubercles, some of which are strongly sclerotized. Although closely resembling the Torneutini in the modification of the tenth abdominal segment, and in having equally long intersegmental skin, larvae of this tribe may perhaps form a connecting link between the Torneutini and the Cerambycini, owing to the presence of three pairs of ocelli.
Pupa. Form elongate, subcylindrical, compact. Head entirely smooth and glabrous; vertex not concealed from above by pronotum. Antennae thick, filiform, short, extending only as far as abdominal segment 1. Eyes feebly convex, glabrous. Pronotum slightly transverse; disc faintly transversely striate and with a few scattered inconspicuous spinules; sides with a sub-basal blunt tooth. Mesonotum and metanotum glabrous except for a few inconspicuous spinules. Elytra and wings extending as far as abdominal segment 4. Abdomen with tergites 1-6 bearing transverse groups of short ferruginous spines (each with a basal seta). Tergite 7 with similar scattered spines and hind margin broadly rounded. Tergite 8 short, strongly transverse, with only a few spines. Tergite 9 retracted and strongly plicate. Sternites with a few scattered spinules. Legs with hind femora extending to abdominal segment 3. Functional spiracles present on abdominal segments 1-5, the sixth to eighth pairs being partly closed; peritreme moderately thick, reniform and not or scarcely raised above general level of cuticle. Length up to 42 mm; maximum breadth 11.25 mm. Adapted from Duffy (1960).
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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