Cerceris zeerustensis DOLLFUSS, 2025

Cerceris zeerustensis DOLLFUSS , nov.sp. ( Figs 26 View Figs 26 a-i)

Holotype: ♁, SOUTH AFRICA, NW Mafikeng, Zeerust env., (N4), 11.XII.2008, leg. Snižek ( JHC) . Paratypes: 2♁♁, same data as holotype ( JHC).

E t y m o l o g y: The holotype was collected near the town Zeerust in South Africa.

R e c o g n i t i o n: The male of Cerceris zeerustensis has no longitudinal carina on coxa III, the flagellomeres IV-XI are distinctly broadened in lateral view and with distinct but short tyloidea ( Fig. 26c View Figs 26 ), the genitalia are characteristically shaped ( Figs 26f, g View Figs 26 ), the anterior margin of the clypeus is black and tridentate ( Fig. 26a View Figs 26 ), the propodeal enclosure is obliquely or irregularly rugose with distinct medio-longitudinal furrow. Additionally, the propodeal side is nearly densely punctate, the pronotal collar is rounded laterally, the sternum VI is rounded apico-lateral and the pygidial plate is slightly narrowed basally.

The male of C. pseudovittata DOLLFUSS has similar shaped flagellomeres but differs from C. zeerustensis by having the propodeal enclosure smooth as a mirror and nearly without lateral- and medio-longitudinal furrows, the propodeal side is smooth and irregularly sparsely punctate (punctures 0-5 diameters apart), the pronotal collar is laterally rectangular raised and the genitalia are differently shaped. The male of C. ockermuellerae DOLLFUSS has also flagellomeres broadened but differs from C. zeerustensis by having the flagellomeres III-X as long as wide and X and XI are all black, the sternum VI has a tiny acute tooth apico-lateral and the genitalia are differently shaped.

D e s c r i p t i o n: ♁, 7.5-8 mm. Sculpture: apical margin of clypeus tridentate ( Fig. 26a View Figs 26 ); flagellomeres IV-XI distinctly broadened in lateral view and with distinct tyloidea ( Fig. 26c View Figs 26 ); mandible edentate internally; prosternum without transverse carina; pronotal collar rounded laterally; propodeal enclosure obliquely or irregularly rugose with distinct medio-longitudinal furrow; petiole as long as wide ( Fig. 26e View Figs 26 ); pygidial plate slightly narrowed basally; genitalia characteristically shaped ( Figs 26f, g View Figs 26 ). Puncturation: clypeus shiny and sparsely, finely punctured; vertex and pronotal collar densely punctate; scutum and scutellum shiny and irregularly punctate (punctures 0-1 (2) diameters apart); mesopleuron densely, coarsely reticulate-punctate; metanotum and tegula impunctate; propodeal side and terga densely punctate; pygidial plate punctate; sterna lateral punctate. Pilosity: clypeal side covered with appressed setae; rest of body irregularly covered with erect sparse erect setae. Colouration: black; following parts yellow: clypeus, frons, inter-antennal carina, scape anteriorly, flagellomeres ventrally, mandible (except apex), tegula lateral half, metanotum, terga II-VI apical, legs partly; wings hyaline, apical fuscous.

♀ unknown.

D i s t r i b u t i o n: South Africa.