Species Geron balpi Evenhuis, 1979

• Geron balpi Evenhuis, N.L. 1979. Studies in Pacific Bombyliidae (Diptera). II. Revision of the genus Geron of Australia and the Pacific. Pacific Insects 21: 13-55 [Date published 30 August] [23].

  Type data:

   Holotype ANIC ♂ (21.i.1973), WA: 21 km NE of Geraldton.
  Paratype(s) ANIC ♀ (16.ii.1935, K.R. Norris), WA: Fremantle; ANIC 2♀ (16-18.iv.1977, D.H. Colless), WA: 8 km S of Cape Berthelot, West Kimberley; CAS ♂ (10.x.1962, 625m, E.S. Ross & D.Q. Cavagnaro), WA: Dales Gorge; ANIC ♀ (21.iii.1971, E.F. Riek), WA: Dunsborough; ANIC ♂ (11.ii.1934, K.R. Norris), WA: Fremantle; ANIC 2♂, 1♀ (12.xi.1953, T.G. Campbell), WA: Montebellow Is; BMNH 10♂,1♀ (17.x.1952, "H.M.S. Campania"), WA: Hermit Is; BMNH 5♂, 1♀ (viii-x.1952, "H.M.S. Campania"), WA: Hermite & Trimouille Islands; BMNH ♂ (7.ix.1952, "H.M.S. Campania"), WA: SE Hermit Is; ANIC ♀ (22.iv.1950, J.A. Mahon), WA: Katanning; ANIC 10♂, 1♀ (26.iv.1977, Colless), WA: 6 km W of Martin's Well, West Kimberley; CAS ♀ (20.ix.1962, 400m, Ross & Cavagnaro), WA: 30 mi [48 km] NE Menzies; ANIC ♀ (10.ii.1977, R. Lewis), NT: Smith Point, Coburg Penin. [11.07°S, 132.08°E].

Distribution

States

Northern Territory, Western Australia

IBRA

NT, WA: Avon Wheatbelt (AW), Dampierland (DL), Geraldton Sandplains (GS), Murchison (MUR), Pilbara (PIL), Swan Coastal Plain (SWA), Tiwi Cobourg (TIW)

Diagnosis

♂. Head: gray-black; face and oral margin bare; frons with sparse silver tomentum lateral to antennal bases; vertex black pilose; occiput white pilose, white tomentose laterally; antennal segments I and II white pilose above, black pilose below; antennal segment III bare; gula gray, white pilose; antennal ratio: 2:1:3.5. Thorax: scutum and scutellum black, sparse yellowish white tomentum overlaid by white pile; pleura gray, white pilose; halter white. Legs: coxae gray, white pilose and tomentose; femora black with white pile and scales ventrally, sparse scales on dorsal and lateral surfaces; tibiae yellow basally, brown apically, sparse white pile and scales on ventral surface; tarsi brown, bare of pile and scales. Wing: hyaline with veins yellow basally, brown apically; r-m crossvein just beyond middle of discal cell; vein closing apex of discal cell straight; squama white, fringe white. Abdomen: tergites black, sparse white pilose overlying sparse white recumbent hair and tomentum. Genitalia: not dissected.
♀. Similar to ♂ except for the following: frons gray, silver tomentose; recumbent pile on dorsum of thorax and abdomen denser than in ♂; white scales present on ptero- and sternopleura; halter yellow; sternites darker gray-black than ♂.

History of changes