Stenodynerus punctifrons

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).