Cobergius vittatus (Macquart)

McAlpine, David K., 2012, Notes and Descriptions of Australian Helosciomyzidae or Comb-winged flies (Diptera: Schizophora), Records of the Australian Museum 64 (1), pp. 51-70 : 70

Cobergius vittatus (Macquart)

Fig. 3

Helomyza vittata Macquart, 1851: 279 , pl. 25, fig. 6. Cobergius canus Barnes, 1981: 50–51 , figs 1, 2.

Cobergius hirsutus Barnes, 1981: 52 .

Cobergius vittatus (Macquart) .–D. McAlpine, 1992: 90–91.

Type material. See list in D. McAlpine (1992: 91).

Other material examined. Victoria: 3♀♀, Lady Julia Percy Island , W of Port Fairy, Jan. 1936, W.S. ( AM, MV) .

Distribution. Kangaroo Island to Bass Strait Islands— apparently restricted to island shores.

Notes

Evidence for the above synonymy was discussed by D. McAlpine (1992). Barnes stated, with regard to C. hirsutus , “The holotype female has two pairs of fine, black setae on the prosternum, hence the Latin name.” In fact, the holotype has one anterior setula on the left side of the prosternum only and two setulae on the membrane near the right side of the prosternum. Other specimens in which the prosternum is exposed have no setulae in this region.

The possibility of an association with fur seal colonies is mentioned above.

ACKNOWLEDGMENTS. Nicole Fisher (ANIC), Ken Walker, and Catriona McPhee (MV) loaned significant collections under their care. Peter Sehnal (NMW) and Ted Edwards (ANIC) provided information on specimens. Stephen Marshall, Michael Driessen, and Günther Theischinger provided important Tasmanian specimens. Suzanne Lindsay carried out electron microscopy. Dan Bickel, Shane McEvey, and Helen Smith made helpful comments on the manuscript.

Figures

Figures 1–3. Left hind tibia, anterior view of apical part. (1) Neosciomyza peckorum. (2) Helosciomyza bickeli. (3) Cobergius vittatus. as, apical ventral spurs; pd, preapical dorsal bristle; sa, subapical anterior bristle.