. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. REVISION OF THE BOMBYLUDAE (DIPTERA) OF SOUTHERN AFRICA 755 confined to sides and not tending to extend uninterruptedly across; the scaling on venter more uniformly white or whitish; the infuscated costal half of wings (pi. ii, fig. 2) slightly more extensive, extending down first posterior cell to at least half its length; first posterior cell almost always acute and closed apically; the spots or clouds on cross veins often more conspicuous; the spicules on front tibiae distinctly more developed and
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. REVISION OF THE BOMBYLUDAE (DIPTERA) OF SOUTHERN AFRICA 755 confined to sides and not tending to extend uninterruptedly across; the scaling on venter more uniformly white or whitish; the infuscated costal half of wings (pi. ii, fig. 2) slightly more extensive, extending down first posterior cell to at least half its length; first posterior cell almost always acute and closed apically; the spots or clouds on cross veins often more conspicuous; the spicules on front tibiae distinctly more developed and more evident; the middle and hind femora with more numerous and more or less double rows of spines. Hypopygium of $ (text-fig. 229) differs from that of zonata in having a much broader basal strut which is more bat-shaped and truncated; lateral struts also slightly broader. From hemiphaea which it also resembles, this species may at once be distinguished by the pre- dominantly straw-coloured hairs on pleurae and body below, fewer dark scaling on body above and below, entirely white-scaled venter, absence of any red on sides of abdomen, closed or very acute first posterior cell and much more hyaline clearer parts of wings. From 17 0*0* and 19 ?? (types and paratypes in the South African Museum). Length of body: about 5-1 o^ mm. Length of wing: about 5-10} mm. Locality. Bushmanland: Onseepkans on the Orange River (Mus. Exp., Oct. 1939) (types); Pofadder (Mus. Exp., Oct. 1939). Griqualand West: Kuruman (Mus. Exp., Oct. 1939).. Text-fig. 229. Side view of hypopygium of <J Exoprosopa aridicola n. sp. Exoprosopa melanozona n. sp. Body black; front part or half of frons and base, genal parts and lower sides of face yellowish; postalar calli, apical two-thirds or three-quarters of scutellum, hind margins of tergites and sternites, the latter much more broadly or entirely in o*, and sides of tergites 2 and 3 (or 4), or in $ even entire sides of abdomen, reddish or yellowish red; ple
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
