Oratostylum Ricardo, 1925

Oratostylum Ricardo, 1925: 260 . Type species: O. lepidum Ricardo 1925: 261, by original designation.

I have examined Ricardo's type material of O. lepidum in the BMNH and, as Hull (1962) gives such a good description of this monotypic genus, I merely present drawings of the male genitalia for comparative purposes (Figs 32- 34). Oratostylum is very similar to Remotomyia but has a very prominent facial swelling (Fig. 31) unlike that found in Remotomyia (Fig. 36). Oratostylum lepidum has long palps which reach the level of the lower facial margin whereas Remotomyia species usually have shorter palps (in the case of R. longipalpus they are long).

MATERIAL EXAMINED. ZIMBABWE; 1 ♂ (lectotype), Matopos, 3. x. 19 2 0, Rhodesian Museum (BMNH) ; 1 ♀ (paralectotype), Forestvale, 2 0.viii..1922, Rhodesian Museum (BMNH) ; 1 ♀ (paralectotypc), Bulawayo, 7. ix. 19 23, R. Stevenson (BMNH) ; 1 ♀, Khami Ruins, ı 8. viii. 1923, Rhodesian Museum (BMNH) . NAMIBIA: 1 ♀, Damaraland, Okombahe area 22 km W Uis Mine, 6. ii. 19 74, M. E. Irwin, 830 m, gravel plain (NM) . SOUTH AFRICA: Natal: 2 ♂, Lebombo foothills 5 km N Josini, 2732AC, 28. viii. 1982, under fig tree, B. Stuckenberg (NM) . Ricardo (1925) did not designate a holotype; I therefore designate the ♂ from Matopos as lectotype and the other specimens mentioned by Richardo as paralectotypes. The ♂ from Forestvale and ♂ from Umguza River are no longer in the BMNH.