Figures 44–46, 115.

Material examined. Holotype, male, NSW, Upper Manning River, 20 km NNW Rawdon Vale, 31°34'S 151°34'E, 19 Feb 1980, A.A. Calder (NMV T-18511).

Paratypes. NSW, 2 males, data as for holotype (NMV); male, Barrington Tops, 16 Nov 1953, A. Neboiss (NMV).

Other material. 4 females, data as for holotype (NMV).

Diagnosis. Adults densely hairy; forewing shape as for O. cymula, footstalk on fork 1, and t2 more distal than t1 or t3. In male genitalia, in ventral view, median process of tergum X constricted close do its base, then swollen, narrowest distally; inferior appendages in ventral view loosely turned inwards in distal third and in lateral view down-turned apically.

Description. Spurs 0, 2, 2. Male forewing length 8.7 mm. Wings with long downy hair along veins; forewing narrow proximally expanded more distally, rounded apically, footstalk on fork 1 about one-fifth length of fork, discoidal and thyridial cells about equal length, anterior anastomosis stepped with t1 and t2 almost level, t3 well anterior to other 2 veins; hind wing slender, narrow. Male genitalia (Figs 44–46). Segment IX broadly convex in lateral view, preanal appendages elongate, slender, more robust in dorsal view, about two-thirds length of median process of tergum X. Tergum X with the membranous ventral plate forming a pair of widely almond-shaped lobes, median process constricted towards base, slightly swollen medially, narrower distally, in lateral view, about twice length of anal appendages. Inferior appendages slender in posterolateral half, in lateral view form resembling O. minasata, down-turned apically and with short stout setae on terminal third. Phallus stout, strongly down-turned distally.

Distribution. North-eastern NSW (Fig. 115).

Etymology. Showing close resemblance to O. cymula.