Dolichoderus albamaculus , Shattuck, Steven O. & Marsden, Sharon, 2013

Shattuck, Steven O. & Marsden, Sharon, 2013, Australian species of the ant genus Dolichoderus (Hymenoptera: Formicidae), Zootaxa 3716 (2), pp. 101-143: 106

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Dolichoderus albamaculus

sp. n.

Dolichoderus albamaculus  sp. n.

( Fig. 1View FIGURE 1)

Types. Holotype worker from Billabong, 26 ° 49 'S 114 ° 37 'E, Western Australia, 12 August 1984, B.B. Lowery, sand, scrub (ANIC, ANIC 32 -066614); 7 paratype workers, same data as holotype except ANIC 32 - 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. 1View FIGURE 1); and the more distinctive carina protruding upwards separating the dorsal and posterior face of the propodeum ( Fig. 1View FIGURE 1 and Fig. 25View FIGURE 25).

Worker description. See Fig. 1View FIGURE 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.