Australian species of the ant genus Dolichoderus (Hymenoptera: Formicidae) Shattuck, Steven O. Marsden, Sharon Zootaxa 2013 3716 2 101 143 3754L Clark Clark [151,483,655,682] Insecta Formicidae Dolichoderus Animalia Hymenoptera 28 129 Arthropoda species parvus    Dolichoderus glauertiWheeler 1934: 147( new synonym).   Types.  Dolichoderus parvus: 27 worker syntypesfrom Sea Lake [approx. 35°30'S 142°51'E], Victoria ( 15 inMCZC, 3 inUSNM, 1 inMVMA, 8 inSAMA).  Dolichoderus glauerti: 18 workerand 3 male syntypesfrom City of York Bay, Rottnest Island, Western Australia( 9 workersin MCZC, 3 workersin ANIC, 3 malesin USNM, 3 workersin MVMA, 3 workersin WAMP).   Diagnosis. Colour of head yellowish-red; sculpturing on head minimal, either essentially absent or consisting of very fine reticulations; pronotum and propodeum lacking spines; posterior face of propodeum weakly concave, separated from the dorsal face by at most a weakly defined angle; propodeum falling away posteriorly so that the angle is below the level of the metanotal groove. Although very similar to  D. kathaeand  D. rutilus, the shape of the dorsal propodeal surface will distinguish this species from others in the  australisgroup.   Worker description. See Fig. 19. Sculpturing on the katepisternum (pleuron of the mesothorax) and propodeum varying from smooth to longitudinally striate. In other respects the available material is similar to that figured.  Measurements(n=5). CI 79–84; EI 33–37; EL 0.28–0.30; HL 0.93–1.12; HW 0.76–0.88; ML 1.23–1.57; MTL 0.66–0.86; PronI 64.40–71.18; PronW 0.49–0.62; SI 116–125; SL 0.91–1.07.   Material examined. New South Wales: Berowra Waters, Sydney (Lowery,B.B.) (ANIC); South Australia: 11mi. E Kimba (Greenslade,P.J.M.) (ANIC); 41kmWbyS Nullarbor (collector unknown) (ANIC); 41kmWbyS Nullarbor (Taylor,R.W.) (ANIC); Belair (Greenslade,P.J.M.) (ANIC); Bridgewater (Greenslade,P.J.M.) (ANIC); Calca (Lowery,B.B.) (ANIC); Englebrook, Nat. T. Reserve (Lee,K.E.) (ANIC); H.K. Fry Reserve [on Heath Road, Crafers] (Wood,T.G.) (ANIC); Kangaroo Is., Breakneck Creek (Taylor,R.W.) (ANIC); Kangaroo Is., Breakneck R. (Greenslade,P.J.M.) (ANIC); Kangaroo Is., Remarkable Rocks (Greenslade,P.J.M.) (ANIC); Kangaroo Is., West Bay (Greenslade,P.J.M.) (ANIC); Mt. Lofty (Greenslade,P.J.M.; Lowery,B.B.; McAreavey,J.) (ANIC); Streaky Bay (Lowery,B.B.) (ANIC); Yorke Peninsula, Innes Nat. Park (Greenslade,P.J.M.) (ANIC); Victoria: Sea Lake (Goudie,J.C.) (ANIC); Western Australia: 23kmESE of Cocklebiddy (Taylor,R.W.) (ANIC); 40kmS Dongara (Lowery,B.B.) (ANIC); Kwinana (Heterick,B.E.) (JDMC); Kalamunda (Greaves,T.) (ANIC); Kensington (Cranley,L.) (JDMC); Redross Goldmine ( 60kmS of Kambalda) (Walliss,S.) (JDMC);Westdale Rsve (Heterick,B.E.) (JDMC).   Comments.  Dolichoderus parvuswas described from Sea Lake, Victoria while  D. glauertiwas established based on specimens from Rottnest Island, Western Australia, located approx. 2500kmto the west. However, based on currently available material there is little separating these forms. Material from the west does show, on average, slightly more extensive sculpturing on the katepisternum (pleuron of the mesothorax) and propodeum and a larger body size while eastern specimens tend to be smoother and slightly smaller. However, the differences are slight, all forms can be found in all areas and numerous intermediate forms exist, making separation based on these characters highly problematic. Additionally, no other characters could be found suggesting that more than a single variable species is involved. Because of this  D. glauertiis here treated as a synonym of  D. parvus.   Dolichoderus parvusoccurs in drier regions with mallee, heath and dry sclerophyll habitats, primarily along southern coastal regions. It forages at night on low vegetation and nests under rocks. There is also a single collection from the Sydney area, approximately 800kms east of the next nearest record. These specimens match other  D. parvusmaterial and there is little doubt they belong to this species. However, the occurrence of this species in eastern New South Walesis in need of confirmation.