Dolichoderus extensispinus Forel

Shattuck, Steven O. & Marsden, Sharon, 2013, Australian species of the ant genus Dolichoderus (Hymenoptera: Formicidae), Zootaxa 3716 (2), pp. 101-143: 117-118

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Dolichoderus extensispinus Forel


Dolichoderus extensispinus Forel 

( Fig. 10View FIGURE 10)

Dolichoderus doriae extensispina Forel, 1915: 76  (raised to species by Clark 1930: 256).

Types. 24 worker syntypes from Blackall Range, Queensland (2 in NHMB, 2 in ANIC, 1 in USNM, 19 in MHNG).

Diagnosis. Pronotum and propodeum with elongate spines; pronotal spines directed laterally and dorsally. The presence of pronotal spines directed laterally and dorsally will distinguish D. extensispinus  from all other Australian Dolichoderus  species.

Worker description. See Fig. 10View FIGURE 10. The available material shows little morphological variation from the figured specimen.

Measurements (n= 5). CI 90–94; EI 21–22; EL 0.36–0.42; HL 1.84–2.06; HW 1.65–1.92; ML 2.72–3.07; MTL 2.02–2.25; PronI 61.36–66.81; PronW 1.07–1.25; SI 106–115; SL 1.90–2.07.

Material examined. Queensland: 15km ESE Gympie (Shattuck,S.O.) (ANIC); Blackall Range (Mjoberg) (ANIC); Blackall Range (Lea,A.M.) (SAMA); Blackall Range (Borch,C.H.) (ANIC); Boombana NP, Brisbane (Taylor,R.W.) (ANIC); Brisbane, Gold Cr. Res. (Lowery,B.B.) (ANIC); Cairns (Bourne,E.H.) (ANIC); Cooloola, Como Forestry HQ (Greenslade,P.J.M.) (ANIC); Cooran Plateau nr. Traveston (Taylor,R.W. & Kohout,R.) (ANIC); Mapleton (Hacker,H.) (ANIC); Mt. Nebo (Lowery,B.; Lowery,B.B.) (ANIC).

Comments. Dolichoderus extensispinus  occurs in forests ranging from dry sclerophyll to rainforest in a restricted region of south-eastern Queensland. It nests under stones and forages on low vegetation and trees. There is a single specimen, collected many years ago, labelled as being from Cairns, some 2000 kms north of the main range of this species. Given that the species has not been collected in this area since this record should be considered suspect and it is unlikely that this species occurs there.