New Species of Austrothaumalea Tonnoir from Australia (Diptera: Thaumaleidae) Author Sinclair, Bradley J. text Records of the Australian Museum 2008 2008-06-25 60 1 1 12 http://dx.doi.org/10.3853/j.0067-1975.60.2008.1490 journal article 10.3853/j.0067-1975.60.2008.1490 2201-4349 4676495 Austrothaumalea ramosa n.sp. Figs 7–8 Type material . HOLOTYPE ? “AUST: NSW: Blue Mtns /N.P., Blackheath, seeps /below Govett’s Leap /Lookout, 1.xii.1993 / B.J.Sinclair ”; “ HOLOTYPE / Austrothaumalea /ramosa /Sinclair” ( AMS ) . PARATYPES : New South Wales : 14 ?? , same data as holotype ( AMS , ANIC, CNC); 1 ? , 1 ! , same locality as holotype, 18.vii.1994 ( CNC ) ; 8 ?? , 3 !! , same locality as holotype, 17.x.2002 ( CNC , ZFMK); 3 ?? ,1 ! , Blue Mtns NP , Grand Canyon , 25.xii.1993 , B.J. Sinclair ( AMS ) ; 1 ? , Royal NP , roadcut seeps nr National Falls , 29.xii.1993 , B.J. Sinclair ( AMS ) ; 2 ?? , Wentworth Falls , Jamison Ck /seeps, 10.xi.1993 , B.J. Sinclair ( AMS ) ; 2 ?? , Wentworth Falls , Valley of the Waters , 3.i., 23.x.1994 , B.J. Sinclair ( AMS ) . Recognition . This is a relatively large species with dark brown gonostyli, distinguished from all other described Australian species of Austrothaumalea by the pointed antlerlike processes on the posterior corners of the gonocoxal plate. Description . Wing length 2.6–3.0 mm. Coloration : Head dull, dark brown. Mesonotum dark brown and shiny, pleura brown, especially ventrally; coxae and femora pale brown, becoming darker on apical leg segments; halter knob dark; abdomen dull greyish-brown, including pleural membrane; terminalia shiny brown, becoming darker towards apex of epandrium and gonocoxites, gonostyli dark brown. Wing evenly darkly infuscate; R+R 1 +R 1+2 with macrotrichia along entire length, remaining veins bare; R 2 situated towards apex of R 1 ; bend in R 3 gentle, not strongly defined; R 3 and R 4+5 divergent toward wing margin; CuA lacking basal appendage. Male abdominal sternite 1 comprising narrow band with broad-shaped posterior notch; sternite 2 reduced to slender, median sclerite, with broad, W-shaped, posterior apex; sternites 3–5 rectangular, sparsely setose; sternite 6 broadly triangular, anterior margin darkly pigmented; sternite 7 reduced to narrow, rectangular sclerite; sternite 8 reduced to pair of small round sclerites positioned ventral to base of gonocoxal plate. Male terminalia ( Figs 7–8 ): Epandrium broadly triangular from ventral aspect; posterior margin with pair of small, round lobes; lacking pointed posterolateral processes. Hypandrium broad, nearly subequal to width of base of gonocoxites. Gonocoxite long, gradually tapering. Gonostylus long, curved strongly before mid-length; gradually tapering to blunt tip; lacking setulae. Parameres fused to form long tube, slightly arched from lateral aspect; longer than gonocoxites. Gonocoxal plate secondarily fused to ventral surface of hypandrium; posterior corners expanded into 4 pointed antler-like prolongations. Distribution . This species was collected in Blue Mountains National Park, west of Sydney. Adults were collected in seepages and streams bordered by subtropical rainforest. In addition, a single specimen was collected in Royal National Park, south of Sydney; unfortunately the habitat was severely burned during the bush fires of 1994. Etymology . The specific name is from the Latin ramosus (branchy), in reference to the multi-branched or antler-like gonocoxal plate.