Dolichoderus clusor Forel

Shattuck, Steven O. & Marsden, Sharon, 2013, Australian species of the ant genus Dolichoderus (Hymenoptera: Formicidae), Zootaxa 3716 (2), pp. 101-143: 112-113

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Dolichoderus clusor Forel


Dolichoderus clusor Forel 

( Fig. 6View FIGURE 6)

Dolichoderus clusor Forel, 1907: 285  .

Types. Neotype worker (here designated, the original holotype (Forel 1907: 286) apparently destroyed in ZMHB in WW II) from Perth, Western Australia (ANIC, ANIC 32 - 061187).

Diagnosis. Sculpturing on head consisting of large, shallow to moderately deep fovea; dorsum of pronotum essentially smooth and shiny, the sculpturing at most very fine; pronotum and propodeum lacking spines; posterior face of propodeum separated from the dorsal face by a distinct carina, posterior face deeply concave; pubescence on first gastral tergite abundant, the individual hairs overlapping

. This species most closely resembles D. scrobiculatus  and D. turneri  ; however the smooth sculpturing and shiny surface of the pronotum will distinguish D. clusor  from both of these. Additionally, D. clusor  is currently only known from South Australia and Western Australia while D. scrobiculatus  and D. turneri  occur in northeastern New South Wales and Queensland.

Worker description. See Fig. 6View FIGURE 6. Pilosity on first gastral tergite varying from fairly thin to quite abundant and thick. Otherwise similar to the specimen figured.

Measurements (n= 5). CI 83–88; EI 29–35; EL 0.26–0.29; HL 0.94–1.04; HW 0.78–0.91; ML 1.25–1.46; MTL 0.69–0.75; PronI 63.77–68.87; PronW 0.53–0.63; SI 108–118; SL 0.89 –1.00.

Material examined. South Australia: 4km SW Auburn (Greenslade,P.J.M.) (ANIC); Clare (McAreavey,J.M.)

(ANIC); Western Australia: 15mi. N Bunbury (Douglas,A.M. & Douglas,M.J.) (ANIC); Australind (Heterick,B.E.) (JDMC); Bunbury (Lowery,B.B.) (ANIC); Carabooda (Heterick,B.E.) (JDMC); Dawesville (Heterick,B.E.) (JDMC); Hope Valley (Heterick,B.E.) (JDMC); Kings Park (Lowery,B.B.) (ANIC); Kingsley (Knowles,D.G.) (JDMC); Mundaring (Clark,J.; Lowery,B.B.) (ANIC); Perth (Clark,J.) (ANIC); Reabold Hill (Majer,J.D.) (JDMC); Rottnest Is. (Delane,P.) (JDMC); Swan River (Clark,J.) (ANIC).

Comments. There is some variation in the abundance of pilosity on the first gastral tergite, which varies from fairly thin to quite abundant and thick. In general South Australian material is hairier than specimens found in Western Australia. However, this variation is continuous and shows a geographic pattern, suggesting that it is intraspecific rather than interspecific.

Dolichoderus clusor  has been collected in Banksia  woodlands (Heterick, 2009) and dry sclerophyll where it forages on tree trunks. It is currently known from two widely disjunct populations, one near Perth, Western Australia and the other in the general vicinity of Adelaide, South Australia.