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

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The early stages are unknown, but the adults are most likely day flying. [Kyrki 1984; Diakonoff and Arita 1979.]


Very small; head smooth-scaled, shining metallic; ocelli present, prominent; chaetosemata absent; antenna almost as long as fore wing, pecten absent, flagellum filiform, thickened in male; proboscis present; maxillary palps 2-segmented, very small; labial palps short, curved or drooping; epiphysis present; spurs 0-2-4; fore wing with brilliant metallic markings, without pterostigma, one vein, probably M 3 , absent, CuP reduced or absent, fork of 1A + 2A small; hind wing with a single frenular bristle in female, discal cell not closed by cross-vein M-CuA, CuP absent; abdomen without dorsal spines; aedeagus and saccus extremely long and slender; corpus bursae with close-set star-shaped spicules. Larval prothorax with three L setae, abdominal segments 1-7 with L1 and L2 on separate pinacula and widely separate on 8; crochets in uniordinal circle; leaf-mining or in web among fruits, pupation on host plant. Pupa without distinct maxillary palps, abdominal segments not movable, and without dorsal spines, with strong lateral ridges and strong lateral and dorsal bristles.


The Heliodinidae are represented in Australia by only four species in two genera. Heliodines princeps is known from only two specimens from Qld. Epicroesa (3 spp.) which also occurs in New Guinea and Japan, is restricted to Qld.