What Bug Is That? The guide to Australian insect families.

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This wholly Australian family is readily recognised by wing structure: vein C bows forward in the fore wing, creating a wide costal cell, and there are numerous cross-veins. Chorista and Neochorista typically have no cross-veins in cell C beyond the humeral vein, while Taeniochorista has 3-6. In males, the rostrum and particularly the maxillary and labial palps are highly modified, providing good characters for species recognition (Riek 1973). Chorista and Neochorista range from south-central Vic. to eastern N.S.W., from the coast to about 200 km inland. Taeniochorista occurs from south-eastern Qld to near Sydney, N.S.W. Known larvae have transverse bands of short setae on most segments, stout prolegs, and many-faceted, compound eyes; they occur in surface soil and leaf litter and are saprophagous. The mature larva excavates a cell in soil, enters an extended prepupal stage, and adults emerge in late summer and autumn.

  • Chorista sp., male