Stenodynerus punctifrons ( Thomson, 1874 )

Zeng, Xin, Chen, Bin & Li, Ting-Jing, 2024, The genus Stenodynerus de Saussure, 1863 (Hymenoptera: Vespidae: Eumeninae) from China: a new species, new records, and key to the species, Zootaxa 5514 (4), pp. 385-400 : 391-392

Stenodynerus punctifrons ( Thomson, 1874)

( Figs 33–39 )

Lionotus punctifrons Thomson, 1874: 57 , ♀ (holotype, ♀, deposited in the Lund Zoological Museum , Sweden).

Odynerus punctifrons : von Schulthess 1897: 84; Berland 1928: 39, 59.

Nannodynerus punctifrons : Blüthgen 1951: 169; 1961: 109, 113, 117.

Stenodynerus punctifrons : van der Vecht & Fischer 1972: 68; Gusenleitner 1981: 215, 237; Kim & Yamane 2004: 258; Tussac 2007: 296; Fateryga 2010: 77; 2017: 190; Amolin & Artokhin 2014: 12; Fateryga et al. 2020: 104.

Material examined. China: 1♀, Shaanxi Province, Yan’an City , Ganquan County, 36°6′57″N, 108°45′34″E, 16. VI.1971, Jikun Yang ( CNU) .

Diagnosis. Female and male. Body length: female 7.0–10.0 mm, male 8.0–10.0 mm; black, following parts yellow ( Fig. 33 ): clypeus in male, interantennal spot on lower frons, a small spot on upper gena, two large and separated spots on pronotum anteriorly, anterior part of metanotum; following parts ferruginous: scape ventrally, apical bands on T1–T2 and S2, tegula, parategula, fore tibia largely. Cephalic foveae distinct, its width less than the distance between posterior ocelli ( Fig. 33 ); clypeus in female sparsely punctate and wider than long, in male almost as wide as long and more densely punctate ( Fig.34 ); apex of clypeus with rounded emargination in both sexes; anterior surface of pronotum sloping, with distinct dense punctures, median foveae V-shaped, pronotal carina interrupted medially ( Fig. 35 ), pronotum with sharper shoulder in male than female; propodeum medially without a transverse plane behind metanotum ( Fig. 36 ); anterior margin of T1 rounded, and obviously narrower than posterior one; T2 with small and sparse punctures, apical border of T2 barely depressed ( Figs 37, 38 ); anterior surface of S2 sloping, in lateral view S2 rounded ( Fig. 37 ), S2 with very small and sparse punctures, ventrally in basal portion without a median longitudinal furrow ( Fig. 39 ).

Distribution. * China (Shaanxi), France, Spain, Switzerland, Italy, Austria, Slovenia, Greece, Turkey, Iran, Russia (from European part to Far East), Kazakhstan, Kyrgyzstan, Mongolia ( Thomson 1874; von Schulthess 1897; Berland 1928; Blüthgen 1951, 1961; van der Vecht & Fischer 1972; Gusenleitner 1981; Kim & Yamane 2004; Fateryga 2010, 2017; Amolin & Artokhin 2014; Fateryga et al. 2020).

Figures

FIGURES 33–39. Stenodynerus punctifrons, ♀. 33. Habitus, dorsal view. 34. Head, frontal view. 35. Pronotum, dorsal view. 36. Propodeum, dorsal view. 37. Metasomal segments 2–6, lateral view. 38. T1–T6, dorsal view. 39. S2–S6, ventral view.