Australian species of the ant genus Dolichoderus (Hymenoptera: Formicidae) Author Shattuck, Steven O. Author Marsden, Sharon text Zootaxa 2013 3716 2 101 143 journal article 10.11646/zootaxa.3716.2.1 f685afba-b823-44c6-8ec9-f931fee7647a 1175-5326 248496 E76C890A-DC27-4B8A-90CD-41D10682E8FA Dolichoderus albamaculus sp. n. ( Fig. 1 ) Types . Holotype worker from Billabong, 26°49'S 114°37'E , Western Australia , 12 August 1984 , B.B. Lowery, sand, scrub (ANIC, ANIC32-066614); 7 paratype workers, same data as holotype except ANIC32- 061315 ( 5 in ANIC, 2 in MCZC). Diagnosis . Pale markings present near lower margin of eye; sculpturing on head consisting of large, shallow to moderately deep fovea; pronotum and propodeum lacking spines; posterior face of the propodeum strongly concave, separated from the dorsal face by a distinct carina; dorsum of propodeum weakly convex and elongate (longer than posterior); pubescence on first gastral tergite sparse, the individual hairs generally not overlapping, or hairs absent. This species is easily confused with D. semiorbis . It can be distinguished from this species by the presence of erect or suberect hairs on the tibiae ( Fig. 1 ); and the more distinctive carina protruding upwards separating the dorsal and posterior face of the propodeum ( Fig. 1 and Fig. 25 ). Worker description . See Fig. 1 . The available material shows little variation from the imaged specimen. Measurements (n=5). CI 74–79; EI 41–43; EL 0.30–0.34; HL 0.92–1.05; HW 0.72–0.78; ML 1.24–1.53; MTL 0.69–0.83; PronI 68.82–78.05; PronW 0.51–0.61; SI 112–128; SL 0.82–0.99. Material examined . Northern Territory : 60km N Alice Springs (Zakharov) (ANIC); South Australia : 51km W Emu Junction (Forrest,J.A.) (ANIC); Sevenhill (Lowery,B.B.) (ANIC); Western Australia : 0.6km W of Neergabby (Heterick,B.E.) (JDMC); Caiguna RH (Heterick,B.E.) (JDMC); Henderson (Heterick,B.E.) (JDMC); Int. Holland Tr./Norseman Rd. (Heterick,B.E.) (JDMC); The Granites (Mt. Magnet) (Heterick,B.E.) (JDMC). Comments . Although rarely encountered, D. albamaculus is widespread across semi-arid southern Australia , occurring from the Western Australian coast to eastern South Australia . It has been found in open scrub and Acacia woodland habitats.