A review of the afrotropical genus Gonioscelis Schiner, 1866 (Diptera: Asilidae), with descriptions of new species Author Londt, Jason G. H. text African Invertebrates 2004 2004-12-31 45 21 124 journal article 10.5281/zenodo.7666901 2305-2562 7666901 Gonioscelis batyleon sp. n. Figs 21–23 , 144 Etymology: Gr. batyle – dwarf (female) + leon – lion. Refers to the small size of this tawny predator. Description: Based primarily on holotype ơ (BMNH). Head :Antennal scape brown-orange, pedicel orange-brown, postpedicel dark red-brown, setae mostly yellow except for some dark red-brown ones ventrally. Facial swelling poorly developed, mystax uniform pale yellow-white, weaker between gibbosity and antennal sockets. Frons and vertex thinly silver pruinose. Ocellar tubercle apruinose with dark red-brown oc . Occiput dark red-brown, gold-silver pruinose except for two apruinose areas behind vertex, setae pale yellow-white. Proboscis and palpus orangebrown, pale yellow-white setose. Thorax : Brown-orange with dark red-brown markings, thinly silver-gold pruinose. Mesonotum with three longitudinal thinly pruinose stripes, central one being longest. Postpronotal lobes brown-orange, not contrasting with adjacent mesonotum, with few pale yellow-white setae. Mesonotal setae mostly pale yellow-white: ac not evident; approx. 6 pairs dc dark red-brown anteriorly, just extending anterior of transverse suture; 3 npl (most anterior brown); 2 sa ; 2–3 pa . Scutellum brown-orange, with 2 pale yellowwhite mrg sct . Wing length 6.1 mm ( paratype 5.4 mm ), membrane mostly yellowbrown. Legs: Mostly brown-orange except for much of anterior surface of prothoracic femur and anteroventral aspects of mesothoracic femur which are dark red-brown, macro setae dark red-brown, minor setae pale yellow-white. Prothoracic coxa brown-orange, silver-gold pruinose, white setose; femoral spur bluntly pointed (angle approx. 60°). Abdomen : Tergites orange-brown to brown-orange (anterior tergites darker than posterior ones), gold-silver pruinose, fine yellow-white setose. Sternites brown-orange, thinly gold-silver pruinose, fine yellow-white setose. Terminalia ( Figs 21–23 ): Long ep (i.e. lobes project beyond tip of proctiger), tapering gradually distally, with a few strong terminal macrosetae; gcx with two inwardly directed distal projections and fine setae; hyp in ventral view slightly longer than broad, tapering rapidly to mid-length before broadening slightly and terminating in a pair of macrosetose lobes separated by a space approximately equal to width of each lobe. Variation: Little evident. Female unknown. Type material: KENYA : 2 ơ ( holotype and paratype ), ‘ Meneghetti / 2-1943 / Nairobi [ 01°17'S 36°49'E ]’, ‘Pres. by / Coryndon Mus. / B.M. 1961-696’ ( BMNH ) . Type locality: Kenya : Nairobi . Distribution, phenology and biology (Tables 1–2, Fig. 144 ): Known only from the type locality, both specimens being collected in February. Similar species:A member of the large and widely distributed group of species possessing a poorly defined facial gibbosity.Although sharing a similar hypandrial shape to species like feijeni , hadrocantha and whittingtoni , batyleon can be readily distinguished from these and other supercially similar species using other features of the male genitalia.