Absensomina Cartwright, 2010, gen. nov.

Genus Absensomina gen. nov.

Type species. Absensomina weara, sp. nov., by original designation, from northeastern Queensland, Australia.

Diagnosis. Key characters of this monotypic genus are hind wing with fork 3 absent, forewing fork 2 with a long footstalk, footstalk about 4 times length of crossvein r -m, fork 3 with a long footstalk, head dorsally with posterior occipital warts positioned transversely and female genitalia with abdominal sternite VIII basally with a single, narrow mesal process; process not as obvious as for species of Ecnomina and Wellsomina.

Description. Relatively small adults, head dorsally with occipital warts aligned transversely; scutellum with oval scutal wart (Fig. 2). Wing venation: forewings relatively narrow, each with length about 4 times width; R1 divided distally, fork 2 nygma absent, forks 2, 3 and 4 present, all short with long footstalks; fork 2 footstalk relatively very long, length about 3.3–4.4 times length cross-vein r -m, length of fork 2 about 1.5–1.7 times length of fork 3; length of fork 3 about 0.6–0.7 times length of footstalk, footstalk fork 3 very long about 4.8–5.4 times length of cross-vein m, cross-veins r -m and m contiguous at fork 3; fork 4 slightly longer than fork 3; fork 5 about twice length of fork 4; discoidal cell closed, short, length about twice width. Hind wings relatively narrow, each with length about 5 times width, forks 2 and 5 present, short, fork 2 footstalk very long, length about 5.8–6.1 times length of cross-vein r -m, humeral lobe developed, discoidal cell narrow, length about 3 times width, 2 anal veins (Fig. 1). Male genitalia with superior appendages short with digitiform processes subapically; inferior appendages fused with mesodistal process. Female genitalia with abdominal sternite VIII relatively broad, basally with short, narrow mesal process, with several short hairs distolaterally, segment IX long, broad-based, tapered distally, segment X relatively short, slender with pair of small cerci (Fig. 6). Larva unknown.

Etymology. Absens - Latin word for missing (fork 3 absent in the hind wing), combined with part of the generic name Ecnomina.

Remarks. Absensomina is a monotypic genus endemic to northeastern Queensland and most similar to the genus Agmina from New Caledonia which also lacks fork 3 in each hind wing (Ward and Schefter 2000). It differs in several characters including forewings with relatively long footstalks to both forks 2 and 3 (Fig. 1) and the head dorsally with posterior occipital warts aligned transversely (Fig. 2).