Jucancistrocerus (Jucancistrocerus) angustifrons ( Kostylev, 1940 )

Li, Ting-Jing, Bai, Yue & Chen, Bin, 2022, A revision of the genus Jucancistrocerus Blüthgen, 1938 from China, with review of three related genera (Hymenoptera: Vespidae: Eumeninae), Zootaxa 5105 (3), pp. 401-420 : 408

Jucancistrocerus (Jucancistrocerus) angustifrons ( Kostylev, 1940)

( Figs 32–46 )

Odynerus angustifrons Kostylev, 1940: 27 (in subgenus Jucancistrocerus ).

Jucancistrocerus angustifrons: van der Vecht and Fischer, 1972: 63 ; Kurzenko, 1977: 551; Tan et al., 2018: 142.

Material examined. 7♀ 4♂, China, Gansu Province, Jiuquan City, Suzhou District, Sandun Town , Jiabiangou Village, 39.854°N, 98.809°E, 1346m, 18.VI.2019, Xue Zhang ; 7♀ 3♂, China, Gansu Province, Zhangye City, Gaotai County, Heiquan Town , Yanzhibao Village , 39.903°N, 98.563°E, 1424m, 19.VI.2019, Xue Zhang .

Diagnosis. Body black, with the following yellow to ferruginous yellow markings: clypeus except margins, a band along lower inner margin of eye, interantennal spot, mandible, a long band of gena, A1, pronotum except posterior apex, scutellum and metanotum except their anterior margins, tegula, parategula, border between dorsal and lateral-posterior surfaces of propodeum, legs except hind coxa to apex of femur, and T1 greatly except anterior black spot, T2 except an unbroken black band, and apical bands of T3–T5 or T3–T6, and S1–S2; clypeus wider than (1.15×) long in female ( Figs 34 , 45) and longer than wide (1.16×) in male ( Figs 35 , 46), sparsely punctate in female and punctures much smaller and minute in male, and apically with deep and rounded emargination in both sexes (female apical width: depth of emargination= 3.96, male apical width: depth of emargination= 2.25); propodeal margin between dorsal and lateral surfaces with distinct tooth-like protuberance ( Fig. 36 ); body with coarse punctures; propodeal margin between dorsal surfaces and lateral and posterior surfaces with tooth-like protuberance; male A13 ( Fig. 39 ) not reaching the apex of A11; T1 ( Fig. 37 ) wider than (1.37×) long and narrower than (0.75 ×) T2; volsella ( Fig. 40 ) apically narrow and sharp, penis valve near the base distinctly with one subquadrate protrusion.

Distribution. China (Gansu, Qinghai, Inner Mognolia).

Figures

FIGURES 32–40. Jucancistrocerus (Jucancistrocerus) angustifrons, 32, 34, 36–38, ♀; 33, 35, 39–40, ♂. 32–33. Habitus, dor- sal view; 34–35. Head, frontal view; 36. Propodeum, dorsal view; 37. Metasoma, dorsal view; 38. Metasoma, ventral view; 39. Antenna; 40. Genitalia, lateral view.

FIGURES 41–46. (taken by Alexander V. Fateryga). Jucancistrocerus (Jucancistrocerus) angustifrons, paralectotypes, 41, 43, 45, ♀; 42, 44, 46, ♂. 41–42. Habitus, dorsal view; 43–44. Habitus, lateral view; 45–46. Head, frontal view.