Pachylophus fossulatus Adams, 1905

(Plate 15, Figs 74, 75)

Pachylophus fossulatus Adams, 1905: 195

? Pachylophus septembris Speiser, 1910: 195

Described from Rhodesia and further recorded from Ethiopia, Kenya, Tanzania and Zaire. Sabrosky (1980: 710) cited P. septembris as a possible synonym.

Material: 2♀, GAMBIA: W. Div., Kombo Distr., Lamin Bridge, rice field near Lamin Bolan, tidal waterway, on young rice, 2.ix.1997, D.J. Mann (OUM & MAFY) ; 1♀, ETHIOPIA: Gonder Prov., Blue Nile at T'is Isat Fwafwate waterfall, 28.iii.1995, (X1032), M. v. Tschirnhaus (ZSM) ; 6♂ 12♀, KENYA: Kikuyu marsh, 17.iv.1983, K . A. Spencer; long series of both sexes Kisumu, c. 1000m, rice plot in marshland, 27.x.2004, M.R. Wilson (NMWC) ; 19♂ 20♀, Nairobi, 9–13.xii.1970, A.E. Stubbs ; 1♂, same data but 7.i.1971; 1♂, Kakamega Forest, 18.xii.1970, A.E. Stubbs; 1♀, 14–16 km. S. of Nakuru, 15.xii.1970, A.E. Stubbs; 1♀, Mombasa, 1–3.i.1971, A.E. Stubbs; 1♂ 1♀, Kapsebet, 11500 ft., 16.x.1971, K . A. Spencer; 1♀, UGANDA: Serere, sweeping Kamod Marsh, 19.vii.1934, J. Ford ; 1♀, RUANDA BURUNDI: x.1956, N.L.H. Krauss; 1♀, TANZANIA: Njombe, 6000–6500 Ft., 16.x.1957, W.P. (all in NHMUK) ; 1♀, MALAWI: Lake Malombe, Nkungulu, 25.x.1983, A. Freidberg (TAU) ; 1♀, SOUTH AFRICA: Natal, Ndwedwe District, Montebello Region, 1.x.1961, B. & P. Stuckenberg (NMP) ; 1♀, Durban, vii.1948, J.C. Faure ; 1♂, ANGOLA: Salazar, I.I. A . A. Farm, 8.iii.1972, BMSAE (both in NHMUK).

In the material from Nairobi the colour of the haltere knob differs from creamy white to deep black. A female from Kikuyu Marsh was dissected and was found to contain a single large egg.