Dolichoderus canopus , 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: 110-111

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Dolichoderus canopus

sp. n.

Dolichoderus canopus  sp. n.

( Fig. 4View FIGURE 4)

Types. Holotype worker from 6.5km ENE Canopus  Homestead, Danggali Conservation Park, 33 ° 29 'S 140 ° 46 'E, South Australia, 21 May 1996, T.A. Weir & K. Pullen (ANIC, ANIC 32 -000797); 1 paratype worker, same data as holotype except ANIC 32 -0066652 (ANIC).

Diagnosis. Pale markings absent from lower margin of the eyes; sculpturing pattern of head and pronotum, although with large fovea, is indistinct; in dorsal view the pronotum with only weakly defined shoulders, with the area between the shoulders convex to flat; pronotum and propodeum lacking spines; dorsum of propodeum weakly and evenly convex, the length shorter (at most approximately the same length) than the posterior face; a narrow, distinct carina separating the dorsal and posterior faces; posterior face of propodeum weakly concave; gaster dark brown to black with sparse pubescence on the first gastral tergite, with hairs generally not overlapping or entirely absent; tibiae with erect or suberect hairs.

This species is most similar to D. formosus  and D. nigricornis  but can be distinguished by the weaker sculpturing pattern on the head compared to the distinct sculpturing pattern of D. formosus  and D. nigricornis  ( Figs 4View FIGURE 4, 11View FIGURE 11 and 17View FIGURE 17).

Worker description. See Fig. 4View FIGURE 4. The two known specimens of this species are nearly identical.

Measurements (n= 2). CI 85 – 85; EI 36–37; EL 0.31–0.32; HL 1.01 – 1.01; HW 0.86 – 0.86; ML 1.32–1.38; MTL 0.73 – 0.73; PronI 64.92–68.22; PronW 0.56–0.58; SI 114–117; SL 0.98 –1.00.

Comments. This species is currently known from only two specimens collected in a berlesate sample consisting of litter from under Casuarina cristata  trees taken in southern South Australia. Nothing more is known of its biology.