Pachylophus frontalis Loew, 1858

Deeming, John C., 2018, A revision of the Afrotropical species of Pachylophus Loew (Diptera: Chloropidae) and some related Ovoviviparous genera, Zootaxa 4482 (1), pp. 1-51: 11

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Pachylophus frontalis Loew, 1858


Pachylophus frontalis Loew, 1858 

( Plate 14View PLATE 14, Figs 72, 73)

Pachylophus frontalis Loew, 1858: 121 

Described from South Africa and further recorded from Rhodesia. Becker's (1913: 147) record from Ethiopia is discounted by Sabrosky (1980: 710).

Spencer (1985: 179) reported finding a first instar larva in the abdomen of a female from Kenya. His specimen, which is in NHMUKAbout NHMUK and labelled "Nairobi, Kilimagui, 19.iv.1983 ", has its abdomen and larva preserved in euparal on a micromount attached to it, and transpires to be P. femoratus  . There has been much confusion between these two species. Andersson's (1977: 124) description of P. frontalis  is correct, but the series in NHMUKAbout NHMUK standing under this species name is a mixture of the two. Those specimens bearing determination labels are as follows: 1♂ Natal, Durban, F. Muir correctly det. C.G. Lamb; 2♀ Natal, Weenen, vi–vii.1923, H.P. Thomasset correctly det. G.E. Bryant; 1♂, Natal, Weenen, xi.1929, H.P. Thomasset; 1♀, Weenen, i.1924, thorn country, H.P. Thomasset; 1♀, Natal, Amarzimtoti, x.1931, J. Ogilvie all correctly det. C.W. Sabrosky; 1♂, E. Cape Prov., Katberg, 4000 ft., xii.1932, R.E. Turner; 1♂, Natal National Park, iii.1932, A. Mackie; 1♀, Meru, vii.1943, van Someron all det. C.W. Sabrosky are P. femoratus  . The main difference between the two species being of pleural dusting, in specimens that had the pleura either rubbed or dirty misidentification could be all too easy.

Material: 3♂ 5♀, KENYA: N. of Nakura, Molo, 17.xii.1970, A.E. Stubbs ( NHMUKAbout NHMUK)  ; 3♂ 4♀, Kasarani, 10– 11.viii.1989, J.W. Ismay ( NMWCAbout NMWC)  ; l ♀, same data ( OUMAbout OUM)  ; 4♂ 7♀, 15km NNE of Nanyuki , 00°08'N 37°10'E, 9.iii.1970, (X345)GoogleMaps  ; 4♂ 2♀, same data but 29.iii.1970, (X347), M.v. Tschirnhaus ( ZSMAbout ZSM)GoogleMaps  ; 3♂ 1♀, UGANDA: Serere, 26.i.1973, J  . L. Overman; 1♂ same data but 14.i.1973  ; 4♀, SOUTH AFRICA: Oribi Gorge , river, 30°41.49'S 30°16.8'E, 16.x.1999, DGoogleMaps  . P. Sumner; 2♂ 1♀ Natal, 25km W. of Winterton, 16.ix.1983, A. Freidberg (all in NMWCAbout NMWC)  ; 1♂1♀, Natal, Balgowan, 21.vii.1956, B. Stuckenberg ; 1♂ 4♀, Natal, Drakensberg, Giants Castle Res., 5800 ft., 18– 23.ix.1961, B  . & P. Stuckenberg ( NMPAbout NMP); 2♂ 1♀, Drakensberge , 7–8.ii.1994, H  . Schumann ( HUBAbout HUB); 1♂, Natal, Nagel Dam , Umgeni River, xii.1959, B  . & P. Stuckenberg ( NMPAbout NMP); 7♂ 8♀, Cape Province, Swellendam, Bontebok Nat. P., 2–3.i.1993, F  . Koch ; 1♀, same data but 13–15.x.1993  ; ♀ same data but 14–16.xi.1993  ; 1♀, same locality, 21–23.iv.1995, U. Göllner   ; 1♂, Cape Province, Grahamstown, 28.xii.1992, F. Koch (all in HUBAbout HUB)  .


Natural History Museum, London


National Museum of Wales


Oxford University Museum of Natural History


Bavarian State Collection of Zoology


Natal Museum


Hacettepe University














Pachylophus frontalis Loew, 1858

Deeming, John C. 2018


Pachylophus frontalis

Loew, 1858 : 121