Atherigona bimaculata Stein, 1910

Muller, B. S., 2015, Illustrated key and systematics of male South African Atherigona s. str. (Diptera: Muscidae), African Invertebrates 56 (3), pp. 845-845 : 861

Atherigona bimaculata Stein, 1910

Fig. 8

Atherigona bimaculata Stein, 1910: 157 ; van Emden 1940: 116, figs 6, 34; van Emden 1956: 519; Deeming

1971: 153, figs 30–32.

Diagnosis: This species can be distinguished from others by the very unique setal arrangement on tergite 5 – a strongly developed seta is present on the posterior margin of each dorsal spot. Its wings have dark smoky suffusions over the humeral crossvein and Sc­R 1. The frontal plates of the head are glossy, shining black. The hypopygial prominence is in the shape of a rounded knob.

Type material examined: Lectotype ♂ [ REPUBLIC OF SEYCHELLES]: ‘Silhouette’ 08 Seychelles Exp., Seychelles Is., Prof J.S. Gardner, 1914-537’ ( NHMUK).

Paralectotype ♂ [ REPUBLIC OF SEYCHELLES] ‘Fundorte. Seychelles: Ziemlich zahlreich auf silhouette VIII. 1908 und Mahé (Morne Blanc, X., XI. 1908, Cascade Estate , I. 1909)’ ( ZMHB) .

Other material examined: MALI: 1♂ Yanfolila , 9.ix–7.x.1986, J. Durham, leg. Deeming ( NMSA) (Previously NMW.Z.1987–144) . SOUTH AFRICA : KwaZulu­Natal: 1♂ 15 km SE Ingwavuma, Bushy area with big trees, 21.ii.1979, J.G.H. Londt, ex Malaise trap ( NMSA) ; 1♂ Ndumo Game Reserve , main road, 26°54.288'S 32°17.974'E, Sand and broad-leafed deciduous forest, 4–8.xii.2009, A.H. Kirk-Spriggs, Malaise trap ( BMSA (D) 17954) ; 1♂ Port Edward , 31°03'S 30°13'E, 8.vi.1997, K.R. Cradock, Malaise trap ( NMSA) ; 1♂ Ramsgate , Riverine bush, 11–20.i.1985, J.G.H. Londt, Malaise trap ( NMSA) ; 1♂ Ramsgate Butterfly Sanctuary , 30°53.3'S 30°20.4'E, 26–29.iv.2004, M.B. Mostovski, light trap ( NMSA) ; 1♂ Zululand , Ndumu [Ndumo] Game Reserve, 26.x.1972, M.E. Irwin ( NMSA) .

Distribution: Cameroon, Congo, Democratic Republic of the Congo, Kenya, Madagascar, Mali, Mauritius, Nigeria, Rwanda, Senegal, Seychelles, South Africa (new).

Figures

Figs 1–9. Atherigona spp.: trifoliate process and hypopygial prominence of (1) A. divergens Stein; (2) A. tetrastigma Paterson; (3) A. parviclivis sp. n.; (4) A. parvihumilata sp. n.; (5) A. angulata Deeming; (6) A. pulla (Wiedemann); (7) A. laevigata (Loew); (8) A. bimaculata Stein; (9) A. univitatta Deeming & Overman. Not to scale.