Figs 2–5 in A review of the afrotropical genus Gonioscelis Schiner, 1866 (Diptera: Asilidae), with descriptions of new species

Figs 2–5. Gonioscelis species, head, showing development of facial gibbosity and mystax. 2. G. submaculatus Speiser, 1910 (Valley of Lower Shire), poorly defined gibbosity, and mystax extending fairly strongly to antennal sockets. 3. G. longulus Ricardo, 1925 (Paul Roux), moderate gibbosity, and mystax extending moderately to antennal sockets. 4. G. lacertosus Engel, 1925 (Hantamsberg Summit), moderate gibbosity, and small weak setae between gibbosity and antennal sockets. 5. G. punctipennis Engel, 1925 (Garies), well-developed gibbosity, and complete lack of setae between gibbosity and antennal sockets.