Stenomacrus Förster, 1869

Varga, Oleksandr, 2024, Review of the genus Stenomacrus Förster, 1869 (Hymenoptera: Ichneumonidae: Orthocentrinae) from Kenya and Burundi: a first step to understanding the diversity of the genus in the Afrotropics, European Journal of Taxonomy 958, pp. 177-202 : 179-180

publication ID	https://doi.org/ 10.5852/ejt.2024.958.2669
publication LSID	lsid:zoobank.org:pub:0747183C-7180-494A-96CC-9A3DE3FAA019
DOI	https://doi.org/10.5281/zenodo.13929304
persistent identifier	https://treatment.plazi.org/id/AD71792F-FF8B-2719-FF70-ACDF7F35FBD3
treatment provided by	Plazi
scientific name	Stenomacrus Förster, 1869
status

Treatment

Key to females of the Afrotropical species of Stenomacrus Förster, 1869 View in CoL View at ENA

(including similar species of Chilocyrtus Townes, 1971 View in CoL )

1. Antenna with a white ring. Réunion................................................................ S. payet Rousse, 2012

– Antenna without a white ring. Madagascar and African mainland .................................................. 2

2. Eye orbits with white spots on vertex. Madagascar............... Chilocyrtus hortorum (Seyrig, 1934) View in CoL

– Vertex entirely black. African mainland ........................................................................................... 3

3. Ovipositor long and upcurved, its sheath about 0.9 × as long as hind tibia ( Fig. 8A View Fig ). First metasomal tergite 1.2 × as long as its apical width, rugulose ( Fig. 8I View Fig ) .................................. S. valvator sp. nov.

– Ovipositor shorter, sheath at most 0.6 × as long as hind tibia (e.g., Figs 2A View Fig , 3A View Fig , 6A View Fig ). First metasomal tergite 1.3–2.8 × as long as its apical width, with different sculpture, but not rugulose (e.g., Figs 2F View Fig , 9F View Fig ) ..................................................................................................................................................... 4

4. Propodeum with lateromedian longitudinal carinae present.First tergite 1.3×as long as its apical width, sculptured only subapically ( Fig. 4F View Fig ). Pronotum longitudinally wrinkled ( Fig. 4C View Fig ). Temples 0.7 × the maximum diameter of eye in dorsal view, weakly narrowed ( Fig. 4D View Fig ) ....... S. glabratus sp. nov.

– Propodeum with lateromedian longitudinal carinae absent (e.g., Figs 2F View Fig , 3E View Fig ). First tergite 1.4–2.8 × as long as its apical width, with different sculpture (e.g., Figs 2F View Fig , 9F View Fig ). Pronotum with at most some wrinkles distally (e.g., Figs 7C View Fig , 9C View Fig ). Temples at most 0.6 × the maximum diameter of eye in dorsal view, more strongly narrowed (e.g., Figs 2D View Fig , 5D View Fig , 7F View Fig ) .................................................................... 5

5. Mesosoma ventrally yellow ( Fig. 5C View Fig ). Mesoscutum pubescent anteriorly ( Fig. 5D View Fig ). Face smooth ( Fig. 5B View Fig ). First metasomal tergite smooth and wrinkled ( Fig. 5G View Fig ) ........................ S. luteus sp. nov.

– Mesosoma with at most pronotum yellow/orange ( Figs 2C View Fig , 6C View Fig ). Other characters different .......... 6

6. First metasomal tergite 2.3–2.8 × as long as its apical width, longitudinally wrinkled ( Figs 2F View Fig , 7G View Fig ) ........................................................................................................................................................... 7

– If the first metasomal tergite longitudinally wrinkled, then at most 1.7 × as long as its apical width ( Figs 3G–H View Fig ) ...................................................................................................................................... 8

7. Face aciculate; clypeus convex, distinctly separated from face, yellow ( Fig. 2B View Fig ). Mesosoma not laterally compressed ( Fig. 2D View Fig ). Antenna with 27 flagellomeres ....................... S. clypeatus sp. nov.

– Face smooth; clypeus flat, not separated from face, the same colour as face ( Fig. 7B View Fig ). Mesosoma laterally compressed ( Fig. 7D View Fig ). Antenna with 19–20 flagellomeres ................ S. scutellaris sp. nov.

8. First metasomal tergite evenly longitudinally wrinkled on smooth background.Second tergite wrinkled at least on basal 0.5 ( Figs 3G–H View Fig ). Antenna with 18–19 flagellomeres ............. S. communis sp. nov.

– First metasomal tergite with at most single wrinkles on granulate background. Second tergite sculptured at most on basal 0.2 ( Figs 6G View Fig , 9F View Fig ). Antenna with 20–22 flagellomeres ......................... 9

9. First metasomal tergite 1.4 × as long as its apical width, with latero-median longitudinal carinae and wrinkles present distally ( Fig. 6G View Fig ). Pronotum distinctly paler than the rest of mesosoma ( Fig. 6C View Fig ) ............................................................................................................ S. pronotalis sp. nov.

– First metasomal tergite 1.9–2.0 × as long as its apical width, with latero-median longitudinal carinae and wrinkles indistinct ( Fig. 9F View Fig ). Pronotum with at most yellow distal marks ( Fig. 9C View Fig ) .................. ........................................................................................................................... S. vuriaensis sp. nov.