Parastephanellus matsumotoi van Achterberg, 2006

Tan, Jiang-Li, Achterberg, Cornelis Van, Tan, Qing-Qing, Zhou, Tong & Li, Tao, 2018, Parastephanellus Enderlein (Hymenoptera: Stephanidae) revisited, with description of two new species from China, Zootaxa 4459 (2), pp. 327-349 : 340-342

Parastephanellus matsumotoi van Achterberg, 2006

Figs 62–69

Parastephanellus matsumotoi van Achterberg (in van Achterberg & Quicke), 2006: 219 –221; Hong et al. 2011: 43 –44 (p.p.).

Material. 3 ♀ + 6 ♂ ( ZJUH): “[ China:] Henan, Luoshan, Lingshan, 22.v.2000, Cai Ping, Nos 200101873, 200101876, 200101882, 200101884, 200101893, 200101896, 200101906, 200101908, 200101911”.

Diagnosis. Ivory streak of temple distinctly contrasting with dark brown posterior part of temple in lateral view ( Fig. 69 ), separated from occipital carina in dorsal view ( Fig. 68 ); temples evenly rounded in dorsal view ( Fig. 68 ); frons of ♀ largely dark brown laterally, medially and ventrally more or less reddish brown ( Fig. 67 ); medio-anteriorly pronotum steeply arising behind neck ( Fig. 63 ); pronotum below tegulae costate ( Fig. 63 ); vein 1- M of fore wing 1.1–1.3 × as long as vein m-cu and 1.1–1.5 × vein 1-SR ( Fig. 62 ); vein 1-SR of fore wing strongly angled with vein 1-M and 1.5–2.5 × as long as vein 2-M+CU1 ( Fig. 62 ); vein m-cu of fore wing approx. 1.5 × longer than vein 2-SR+M; sclerotized part of vein 2-M of fore wing surpassing level of apex of vein r; vein r of fore wing ends far behind level of apex of pterostigma ( Fig. 62 ); hind coxa of ♀ 2.7–3.0 × as long as wide in dorsolateral view ( Fig. 65 ); first metasomal tergite of ♀ slender, 6.8–7.5 × as long as wide; emargination of pygidial area of ♀ wide ( Fig. 66 ), distinctly protruding and truncate latero-apically ( Fig. 66 ); ovipositor sheath 1.5–1.8 × as long as body.

Distribution. China (Henan), Japan (Kyushu), Korea.

Notes. As well illustrated by Hong et al. (2011) two forms exist in China; one with anteriorly steep posterior part of pronotum (as in typical P. matsumotoi from Japan: Figs 312–324 in Hong et al. 2011; Fig. 63 ) and one with anteriorly gradually sloping posterior part of pronotum (Figs 325–337 l.c.; Fig. 73 ). Thanks to the large series from Taibai Mt. it became obvious that the specimens with gradually lowered anterior slope of the pronotum are a separate species because the different pronotum is combined with a different venation of the fore wing (see couplet 1 of the key). It is described below as P. yixiwui sp. n. from Shaanxi and Henan.

Figures

FIGURES 62–69. Parastephanellus matsumotoi van Achterberg, ♀, paratype. 62, fore wing; 63, pronotum, lateral aspect; 64, pronotum, dorsal aspect; 65, hind coxa, dorso-lateral aspect; 66, pygidial area at apex of metasoma, dorsal aspect; 67, head, anterior aspect; 68, head, dorsal aspect; 69, head, lateral aspect. From: Hong et al. (2011).

FIGURES 72–81. Parastephanellus yixiwui sp. n., ♀, holotype. 72, wings; 73, mesosoma, lateral aspect; 74, mesosoma, dorsal aspect; 75, first metasomal tergite, dorsal aspect; 76, hind coxa, dorso-lateral aspect; 77, hind leg, lateral aspect; 78, head, anterior aspect; 79, head, dorsal aspect; 80, head, lateral aspect; 81, base of antenna.