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

Logo: What Bug Is That? Logo: Taxonomy Research & Information Network



Adults are usually white with dark pattern. Australia has a rich fauna of which nine are named. Some Australian species with a wingspan of 15mm are among the largest in the family. The family contains few genera. One Australian species belongs to an unnamed genus, while all others are placed in Opostega . The biology of Australian species is unknown, but elsewhere opostegid larvae either mine in leaves or excavate mines up to 1 m long in cambium. Adults fly in the late afternoon and come to light. [D.R.Davis 1989].


Head with tuft of long, hair-like scales between antennae and on vertex; antennae with expanded eye-caps and special, branched sensilla (similar to ascoid sensilla in Micropterigidae) on flagellar segments (van Nieukerken and Dop 1987); labial palps drooping; wing coupling in both sexes by long, curved pseudofrenular bristles curving around ventrally expanded M vein in fore wing (Nielsen 1985a); fore wing with 4 or 5 unbranched veins; valva with pectinifer. Larva apodous, long, very slender and nematode-like; head with single rudimentary stemma on each side. Pupa in general form similar to that of Nepticulidae, scape of antenna nearly covering eye, 3 pairs of coxae visible.

  • Opostegid (micro moth)