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 theischingeri n.sp. Figs 9–10 Type material . HOLOTYPE ? “[AUST]: Blue Mtns. / NP , Blackheath, Govetts /Leap, seeps along track / 12.xii.1998 / B.J. Sinclair ”; “ HOLOTYPE / Austrothaumalea /theischingeri /Sinclair” ( AMS ). Recognition . This species is similar to A. uloola , distinguishable by the form of the gonocoxal plate. Description . Wing length 1.8 mm. Coloration : Head dull, dark brown. Mesonotum and pleura brown and somewhat shiny; legs paler than thorax; halter knob concolorous with legs; abdomen dark brown. Wing evenly 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 well defined; R 3 and R 4+5 divergent toward wing margin; CuA with short basal appendage. Male abdominal sternite 1 narrow, spectacle-shaped; sternite 2 reduced to slender, median sclerite, with pair of small, posterolateral sclerites; sternites 3–6 rectangular, sparsely setose; sternite 7 trapezoidal-shaped, with several marginal setae; sternite 8 narrow, one-third length of sternite 7. Male terminalia ( Figs 9–10 ): Epandrium broadly triangular from ventral aspect; posterior margin broad, folded internally, apex with pair of small rounded lobes; sharply pointed posterolateral processes present. Hypandrium broad, one-half width of base of gonostylus. Gonocoxite broad, somewhat narrower at apex. Gonostylus shorter than gonocoxites, gradually curved, tapered; clothed in setulae; apex partially flattened. Parameres fused to form short, laterally flattened, broad blade-like process arched lengthwise. Gonocoxal plate broad basally; median portion darkly pigmented as pair of ridges leading to 2 pairs of divergent digitiform processes; basally not fused to hypandrium. Distribution . This species is known only from the holotype , the type locality of which is a densely wet, vast seepage area where at least seven species of thaumaleids are recorded. Etymology . The specific name honours Günther Theischinger, who made the first careful study and revision of Australian thaumaleids. Remarks . On the basis of the posterolateral epandrial processes, apex of epandrium and shape of the paramere, this species is most closely related to A. uloola .