Notiochyromya sexspinosa ( Lamb, 1914 ) Ebejer, 2009

Ebejer, Martin J., 2009, A revision of Afrotropical Chyromyidae (excluding Gymnochiromyia Hendel) (Diptera: Schizophora), with the recognition of two subfamilies and the description of new genera, African Invertebrates 50 (2), pp. 321-321 : 344-346

Notiochyromya sexspinosa ( Lamb, 1914) , comb. n.

Chiromyia sexspinosa: Lamb 1914: 355 .

Figs 8a , 9b , 10

Diagnosis : A yellow species with abdomen (females) marked with dark spots: 1 large pair on tg 2, smaller pair on each of tg 3–6; tg 3–5 dorsally at middle sometimes with brown ill-defined spot; scut with 3 pairs of marginal setae. Postabdomen with very small cerc and hypr, the latter with about 6 microtrichia; s not uniformly black and with sclerotized first part of duct very short. The specimens from Niger Province listed below are rather pale with the spot on tg 2 light brown and the brown bands dorsally on tg absent. Type material examined: SEYCHELLES: ^(holotype) ‘Mahé 08-9, Seychelles Exp. / Prof. J.S. Gardiner’ ( BMNH); 3^(paratypes) same data (1 BMNH, 2 CUMZ) .

Other material examined: GHANA: 1^Accra , 1921, J.W. Scott Macfie, laboratory windows ( BMNH) . NAMIBIA: 1^Rundu District , 20 km E Rundu, 17°55'46"S: 19°58'43"E, 17–18.x.1999, A.H. Kirk-Spriggs, T. Pape & W. Hauwanga, Malaise trap ( NMNW) . NIGERIA: 1^Zaria, Samaru , 9.iii.1969, J.C. Deeming ( NMWC) ; 2^Zaria, Samaru , viii.1967, [no collector], mercury vapour light trap ( BMNH) ; 8^Niger Province, nr Mokwa , 2.v.1973, J.C. Deeming, at entrance to bat cave ( NMWC) .

Distribution: Ghana, Namibia, Nigeria, Seychelles.

Remarks. Lamb (1914) wrote that he had four males. This is a surprising error as in fact they are all females with the ova developed to an advanced stage. They are almost identical to each other. In three of the specimens, the dark spots on the abdomen are brown and shiny rather than black. Lamb’s description is not detailed enough to allow the identification and reliable separation of sexspinosa from the undescribed sp. C only on the basis of females (see below).

Figures

Fig. 8. Dorsal aspect of abdomen: (a) Notiochyromya sexspinosa (Lamb), ^, Nigeria; (b) Notiochyromya tripunctata sp. n., ơ. Scale bar = 0.6 mm.

Fig. 9. Lateral aspect of head:(a) Notiochyromya tripunctata sp. n., ơ; (b) Notiochyromya sexspinosa (Lamb), ^, Nigeria. Scale bar = 0.4 mm.

Fig. 10. Notiochyromya sexspinosa (Lamb), ^, Nigeria: (a) postabdomen, ventral; (b) ovum; (c) spermatheca, enlarged. Scale bars = 0.3 mm in Figs 10a, b.