Orphninotrichia alata sp. nov.

(Figs 5, 6)

Material examined. Holotype male, North Queensland, Crystal Cascades, Tributary of Crystal Creek, 16.96508S 145.67603E GPS ± 2 m, 69 m asl, 5 Nov 2008, sweep net, A. Wells, QM.

Paratypes, Queensland: 2 males, collected with holotype; 1 male, Fishery Falls, S of Cairns, 17°11’S 145°52’E, 10–11 Nov 2007, light trap, A. Cairns, A. Wells, W. Cairns.

Diagnosis. This is the only species in the genus with wing-like processes laterally on tergite X.

Description. Males: Forewing length, 1.4–1.7 mm. Antennae 21-segmented. Male genitalia (Figs 5, 6): Abdominal sternite VIII longer than wide, in ventral view posterior margin concave on each side of small slightly divided narrow prominence, in lateral view apically acute. Segment IX produced laterally, in ventral view lateral lobes slightly inturned apically, with small sclerotised area on inner side; in lateral view broadly subtriangular. Tergite X broad, parallel-sided at base, expanded at about half length to form pair of wing-like processes, tapered beyond these to shallowly bifid apex. Inferior appendages and ventral plate difficult to separate, forming series of irregular-sized lobes. Aedeagus same as those of O. desleyae and O. barbarae .

Etymology. Named for the distinctive wing-like lobes on tergite X.