New species of the genus Cerceris LATREILLE, 1802 from Sub-Saharan Africa Hymenoptera, Apoidea, Crabronidae Part I Dollfuss, Hermann M, Mt. Linzer biologische Beiträge 2023 55 1 307 349 DOLLFUSS DOLLFUSS 2023 [178,519,496,518] Insecta Crabronidae Cerceris Animalia Hymenoptera 9 316 Arthropoda species hanangensis sp. nov.   P a r a t y p e s: Tanzania, 2♁♁, same data as holotype ( CAS);  1♀, Tanganyikaeast side, Mt. Meru,  1700 m,  28.X.1957, leg. Ross& Lee( CAS). E t y m o l o g y: Theholotypewascollected on Mt. Hanang in Tanzania. R e c o g n i t i o n:  Cerceris hanangensisis characterized by having no longitudinal carina on coxa III. The apical margin of the clypeus of the female has median a small slightly rised lamella and the lateral parts of the clypeus are distinctly emarginate ( Fig. 7a,b), the mandible has a broad tooth internally, the scutum is micropunctate and shallowly longitudinally striate with punctures between the striae, the propodeal enclosure is irregularly obliquely striate with shallow lateral- and medio-longitudinal furrows. Additionally, clypeus and frons, tegula, legs partly and wings are ferruginous. The female of  C. tsavoensisis similar to  C. hanangensisbut differs in having the median part of clypeus with a triangular carina near apical margin. The female of  C. nugaxdiffers from  C. hanangensisby having a median area of clypeus with two small projections and a short longitudinal carina behind them, the mandible has an acute tooth internally, the scutum is dull and densely punctate and the propodeal enclosure is transversely striate. The female of  C. anubisis similar to  C. hanangensisbut differs in having the median area of the clypeus with a slightly emarginate transverse carina and behind it two short sharply keeled tubercles, the mandibles has a double-tooth and the clypeus, the frons and basal half of mandibles are yellow. The male of  C. hanangensisis characterized by having the apical margin of clypeus black and tridentate ( Fig. 8a), the mandibles are edentate internally, the flagellomeres VIII-XI have small tyloidea ( Fig. 8c), the prosternum has no transverse carina, the propodeal enclosure is shallowly irregularly obliquely ridged and the lateral- and medo-longitudinal furrows are indistinctly developed. Additionally, the petiolus is slightly longer than wide, the tegulae and the wings are ferruginous and the genitalia are characteristically shaped ( Fig. 8f). The male of  C. rufiscutisis similar to C. hanagensisbut differs in having the flagellomere X and XI with flat tyloidea, distinctly differently shaped genitalia and the body is predominantly ferruginous. D e s c r i p t i o n: ♀, 11.5 mm. Sculpture: apical margin of clypeus median with small slightly rised lamella and lateral with small tooth; lateral sides of clypeus distinctly emarginate ( Fig. 8a); mandible with broad tooth internally; interantennal carina not sharply keeled; prosternum without transverse carina; pronotal collar lateral rounded; mesopleuron with tiny tubercle or without; epimeron without crest; propodeal enclosure irregularly obliquely striate lateral- and medio-longitudinal carina shallow; petiolus as wide as long ( Fig. 7e); sternum II without basal plate; flagellum ( Fig. 7c); pygidial plate ( Fig. 7d). Puncturation: clypeus densely micropunctate (dull); frons micropunctate and sparsely punctate; pronotal collar dull and irregularly punctate; scutum dull and longitudinally rugose-punctate; scutellum similar as scutum; metanotum impunctate; mesopleuron dull and reticulate-punctate; mesopleuron venter micropunctate; propodeal sides densely reticulate-punctate; terga I-IV dull and sparsely punctate; tergum V micropunctate and finely punctate; pygidial plate irregularly structured; tegulae impunctate; sterna shining and shallowly punctate. Pilosity: clypeus sides covered with appressed setae; gena covered with long erect setae; terga III-V more or less covered with appressed short setae which not obscure underlying sculpture; rest of body sparsely covered with erect setae. Coloration: black; following parts ferruginous: clypeus, frons, mandibles (except apex), interantennal carina, flagellum, gena, tegula, segment VI, legs nearly all, wings and sternumV; following parts yellow: pronotal collar in some specimens, metanotum, petiolus apico-lateral, terga II-IV apical and coxa III lateral.   Fig. 7:  Cerceris hanangensis DOLLFUSS nov.sp.♀: ( a) clypeus; ( b) clypeus lateral view; ( c) flagellum; ( d) pygidial plate; ( e) petiolus.   Fig. 8:  Cerceris hanangensis DOLLFUSS nov.sp.♁: ( a) clypeus; ( b) clypeus lateral view; ( c) flagellum; ( d) pygidial plate; ( e) petiolus; ( f) genitalia dorsal and gonostyle in lateral view. ♁, 10-12 mm. Sculpture: apical margin of clypeus more or less tridentate ( Fig. 8a); mandible edentate internally; prosternum without transverse carina; mesopleuron without tubercle; epimeron without crest; flagellomere VIII-XI with small tyloidea ( Fig. 8c); propodeal enclosure shallowly irregularly ridged, lateral furrows indistinctly develpoped, medio-longitudinal furrow more or less developed; petiolus as slong as wide or slightly longer ( Fig. 8e); coxa III without longitudinal carina; sternum II without basal plate; sternum VI with rectangular lamella apico-lateral; pygidial plate ( Fig. 8d); genitalia ( Fig. 8f). Puncturation: clypeus and frons micropunctate; vertex densely punctate; prosternum dull and sparsely punctate; pronotal collar micropunctate and irregular punctate; scutum and scutellum rugose and punctate between rugae; metanotum impunctate; propodeal sides densely punctate; mesopleuron rugose-punctate; mesopleuron venter dull; terga densely punctate, toward last tergite more and more sparsely punctate; sterna shining and apico-lateral sparsely punctate. Pilosity: body with long erect setae, except on terga III-VI dorsal more appressed; clypeal brush broad. Coloration: black; following parts yellow: clypeus, frons, interantennal carina partly, pronotal collar lateral; metanotum, petiolus apico-lateral, terga II-IV small bands apically, sterna II-IV latero-apical; hindcoxa and hindtrochanter partly; following ferruginous: mandible (except apex), flagellum, wings, tergum and sternum VI partly, pygidial plate and legs partly. D i s t r i b u t i o n: Tanzania(Mt. Hanang, Mt. Meru).    Cerceris mackinnonaDOLLFUSS nov.sp.( Figs 9, 10)H o l o t y p e: ♀, Kenya-SE, S Mackinnon Road, 13.IV.2007, leg. M. Halada (OÖLM).  P a r a t y p e s: 8 ♁♁, same data as holotype ( JHC);  Ethiopia, 2♀ ♀, 20 kmSE Konsa, 05°15'N 37°32'E,  850 m,  11.-13. V.2015, leg. J. Halada( JHC);  1♀,  40 kmW Konso, 05°19'N 37°04'E,  600 m,  14. V.2015, leg. M. Halada( JHC). Kenya, 1♀, Voi( Tsavo),  13.-17.XII.1997, leg M. Snižek( JHC);  1♀, E Mwingi,  14. V.2007, leg. M. Halada( JHC); 1♁, Coast Province, Taita Hill Discovery Centre, 3°42.3'S 38°46.6'E,  13.-14.X.2002, leg. Prentice( CAS). Tanzania, 1♁, Tanga Region,  2 kmNE Mkomazi, 4°37.8'S 38°5.5'E,  13.I.2003, leg. Prentice( CAS). E t y m o l o g y: The holotypewas collected in Mackinnon Road ( Kenya). R e c o g n i t i o n:  Cerceris mackinnonais characterized by having the coxa III without a longitudinal carina, the mandibles are edentate internally and the epimeron is unusually swollen. The female of  C. mackinnonais characterized in having the clypeus concave in lateral view ( Fig. 9b), the apical margin of the clypeus is produced with four more or less developed teeth ( Fig. 9a), the propodeal enclosure is obliquely irregularly rugose and the sternum II has a basal plate limited laterally with shallow carina ( Fig. 9e). Additionally, the scutum is shining and irregularly sparsely punctate (punctures 0-2 diameter apart). The female of  C. gomphocarpidiffers from  C. mackinnonain having the propodeal enclosure smooth as a mirror, the lateral- and medio-longitudinal furrows nearly lacking and the sternum II has no basal plate. The female of  C. illustrisis similar to  C. mackinnonabut differs in having the scutum densely longitudinally punctured and the apical margin of clypeus is tongue-like produced and without teeth. The female of  C. xosadiffers from  C. mackinnonain having the apical margin of the clypeus tongue-like produced and median emarginate, the scutum has longitudinal rugae and punctures between them and the epimeron is not unusually swollen. The female of  C. namibiensisdiffers from  C. mackinnonain having the clypeus distinctly convex in lateral view, a small point on apical one-third of median area, the propodeal enclosure is smooth as a mirror, the sternum II has no basal plate and the epimeron is not unusually swollen. The female of  C. nigeriaensisdiffers from  C. mackinnonain having the clypeus distinctly convex in lateral view, the scutum is micropunctate and coarsely densely punctate, the epimeron is not unusually shaped and the sternum II has no basal plate, the apical margin of clypeus has a tooth lateral and the mandible has a small emargination internally. The male of  C. mackinnonais characterized by an apical margin of clypeus black and tridentate ( Fig. 10a) and a nearly flat clypeus in lateral view ( Fig. 10b), the flagellomeres VII-XI have shining broad tyloidea ( Fig. 10c), the sternum II has a semicircular basal plate shallowly delimited behind ( Fig. 10e) and the pygidial plate is distinctly narrowed basally ( Fig. 10f). Additionally, the propodeal enclosure is obliquely rugose, the lateral carina of pronotum is ending in a point and the sterna III-IV have more or less developed long erect setae which not obscure the underlying sculpture. The male of priesneridiffers from  C. mackinnonain having the apical margin of clypeus yellowich-brown and edentate, the propodeal enclosure is smooth and the body is predominantly yellow. The male of namibiensisdiffers from C. makinnonaby having the pronotal enclosure smooth, the sternum II without a basal plate and the flagellum without tyloidea. D e s c r i p t i o n: ♀, 8-10 mm. Sculpture: median part of clypeus slightly concave in lateral view ( Fig. 9b); apical margin of clypeus produced with fore more or less developed teeth, in some specimens nearly straight ( Fig. 9a); mandible edentate internally; prosternum without transverse carina; pronotal collare lateral rounded; propodeal enclosure irregularly obliquely rugose (variably); petiolus wider than long ( Fig. 9d); sternum II with basal plate limited with shallow carina ( Fig. 9e); mesopleuron without tubercle; epimeron unusually swollen but without distinct crest; coxa III without longitudinal carina; flagellum ( Fig. 9c); pygidial plate basal slightly narrower than apical ( Fig. 9f). Puncturation: medioclypeal area shining and very sparsely finely punctate (punctures 2-4 diameters apart); clypeal sides dull; frons dull and punctate; vertex densely punctate; prosternum dull and sparsely punctate; scutum shining and irregularly punctate (punctures 0-2 diameters apart); scutellum more sparsely punctate; metanotum finely punctate; tegula impunctate; mesopleuron and propodeal sides coarsely reticulate-punctate; terga I-IV densely punctate; tergum V dull and sparsely finely punctate; pygidial plate densely punctate; sterna shining and lateral punctate. Pilosity: clypeal sides covered with white appressed setae; sternum V with more or less long setae which not obscure underlying sculpture; rest of body covered with sparse setae. Coloration: very variably; black; following parts whitish-yellow: clypeus, frons, tegula, metanotum, terga apical, mandible basal; legs black, ferruginous and yellow (variably); flagellum ventral ferruginous, dorsal fuscous; some specimens with gaster ferruginous and yellow; wings hyaline, radial cell of forewing fuscous. ♁, 8-10 mm. Sculpture: apical margin of clypeus tridentate and clypeus in lateral view flat ( Fig. 10a,b); mandible edentate internally; flagellomers VII-XI with flat shining tyloidea ( Fig. 10c); prosternum lateral with short rugae; pronotal collar lateral rounded; lateral carina of pronotum ending in point; mesopleuron without tubercle; epimeron unusually swollen; propodeal enclosure obliquely rugose; petiolus wider than long ( Fig. 10d); pygidial plate distinctly narrower basal than apical ( Fig. 10f); sternum II with basal plate more or less delimited behind ( Fig. 10e); coxa III without longitudinal carina; genitalia ( Fig. 10g). Puncturation: clypeus and frons shining and sparsely punctate; vertex shining and sparsely punctate; pronotal collare densely punctate; prosternum micropunctate; scutum shining and variably irregularly punctate (punctures 0-1 diameter apart); scutellum sparsely punctate (punctures 1-2 diameters apart); mesopleuron and propodeal sides coarsely reticulate-punctate; terga coarsely punctate; mesopleuron venter shining and very finely sparsely punctate; sterna medially finely and apico-laterally coarsely punctate. Pilosity: clypeal brush broad ( Fig. 10a); sterna III-VI with more or less long erect setae which not obscure underlying sculpture; rest of body with sparse setae. Coloration: black; following parts yellow: clypeus, frons, interantennal carina, mandible basally, scapus anteriorly, pronotal lobes laterally, tegula, metanotum, terga apically; petiolus, tergum II and sternum II partly ferruginous; flagellum ferruginous and partly fuscous; legs black, ferruginous and yellow; wings hyaline, radial cell fuscous.   Fig. 9:  Cerceris mackinnona DOLLFUSS nov.sp.♀: ( a) clypeus; ( b) clypeus in lateral view; ( c) flagellum; ( d) petiolus; ( e) sternum II; ( f) pygidial plate.   Fig. 10:  Cerceris mackinnona DOLLFUSS nov.sp.♁: ( a) clypeus; ( b) clypeus in lateral view; ( c) flagellum; ( d) petiolus; ( e) sternum II; ( f) pygidial plate; ( g) genitalia dorsal and gonostylus in lateral view. D i s t r i b u t i o n: Ethiopia, Kenya, Tanzania. [178,761,581,604] CAS Tanzania 9 316 1 1957-10-28 CAS Ross & Lee Tanzania 1700 Tanganyika Mt. Meru 9 316 1 1 [177,690,1122,1146] JHC 11 318 1 2015-05-11 2015-05-13 2015-05-11 V, JHC J. Halada Ethiopia 850 5.25 Konsa 1305 37.533333 11 318 3 3 1997-12-13 2015-05-14 1997-12-13 V, JHC M. Halada & M. Snizek Kenya 600 5.3166666 Voi 1305 37.066666 Tsavo 11 318 2 2 [287,716,1196,1218] 2007-05-14 V, JHC M. Halada Kenya Mwingi 11 318 1 1 2002-10-13 2003-01-13 2002-10-13 CAS Prentice Tanzania -4.63 Hill Discovery Centre 130 38.091667 11 318 1 Pwani