Antlions of southern Africa: Syngenes Kolbe, 1897, with descriptions of two new species and comments on extra-limital taxa (Neuroptera: Myrmeleontidae: Acanthaclisini) Author Mansell, Mervyn W. text Zootaxa 2018 2018-10-10 4497 3 346 380 journal article 29173 10.11646/zootaxa.4497.3.2 eb673df4-addc-4ff1-a244-12940e61c6ac 1175-5326 1455058 F847993D-11E7-41A9-8E57-08C64450D1A3 Key to species of Afrotropical Syngenes 1. Taxa from Africa...................................................................................... 2 - Taxa from Madagascar and Indian Ocean Islands ............................................................. 6 2. Tibial spurs right-angular, with prominent internal flange ( Figs 4, 5 ); biaereolate cells present in costal area of forewing before Rs ( Fig. 3 ); abdomen with chevron-like pattern ( Fig. 11 ). Eastern African coastal belt, South Africa to Somalia ............................................................................................. S. longicornis (Rambur) . - Tibial spurs not sharply bent at a right angle, more evenly curved and lacking prominent triangular flanges............... 3 3. Biaereolate cells absent from costal area of forewing before Rs and rarely present before Rs2 ( Fig. 27 ); unbroken series of biaereolate costal cells only commencing beyond Rs2; tibial spurs slender, strongly curved (but not bent at right angle), with slight flange in forelegs ( Figs 28, 29 ); Central, South and Eastern Africa........................... S. medialis sp. nov . - Biaereolate cells present in costal area of forewing before Rs or commencing at Rs with three or more before Rs2......... 4 4. Wings narrow relative to other Syngenes species ( Figs 44, 45 ); body black with bright yellow markings ( Figs 46 , 51 ). Namibia and Northern Cape Province, South Africa.................................................... S. scholtzi sp. nov. - Wings broad; unbroken series of biaereolate cells present in forewing costal area from before Rs2 to pterostigma. Central and West Africa........................................................................................... 5 5. Costal area with 1–2 biaereolate cell before Rs in each forewing (based only on the Holotype from Congo ) ( Figs 73, 74 ). Wings heavily marked............................................................. S. inquinatus (Gerstaecker) . - Costal area with variable number of biaereolate cells (1–4) before Rs (based only on one syntype from Lagos , Nigeria ), slender species, wings not heavily marked, spurs curved, slender ( Figs 76, 77 )......................... S. debilis (Gerstaecker) . 6. Forewing costal area with many (> 8) biaereolate cells before Rs.............................. S. dolichocercus Navás - Forewing costal area with fewer (<6) biaereolate cells before Rs............................. S. maritimus (Needham)