Chelonus (Microchelonus) staurorhytis, Zhou & Achterberg & Tang & Chen, 2024

Zhou, Jin-Jin, Achterberg, Cornelis Van, Tang, Pu & Chen, Xue-Xin, 2024, A review of the subgenera Carinichelonus, Microchelonus, Parachelonus and Stylochelonus of the genus Chelonus Panzer (Braconidae: Cheloninae) with descriptions of twenty-one new species from China, Zootaxa 5412 (1), pp. 1-127 : 84-86

publication ID	https://doi.org/ 10.11646/zootaxa.5412.1.1
publication LSID	lsid:zoobank.org:pub:DB6DD20F-6EB7-4152-AC80-2F67EE06684B
DOI	https://doi.org/10.5281/zenodo.10676104
persistent identifier	https://treatment.plazi.org/id/2B5587AD-F05D-732C-FF39-688DFD89BD52
treatment provided by	Plazi
scientific name	Chelonus (Microchelonus) staurorhytis
status	sp. nov.

Treatment

Chelonus (Microchelonus) staurorhytis sp. nov.

Figs 77–80 View FIGURE 77 View FIGURE 78 View FIGURE 79 View FIGURE 80

Material examined. Holotype: female, Baishanzu , Zhejiang Prov., China, 20.VII.2003, Hong Wu, No. 946956 ( ZJUH) . Paratypes: 1 male, Nanling , Guangdong Prov., China, 23.VII.2003, Zaifu Xu, No. 20047714 ; 1 female, Longxi Mt. , Fujian Prov., China, 16.VII.1991, Changming Liu, No. 20006982 .

Diagnosis. This new species is similar to C. (M.) bullatus sp. nov. ( Fig. 15 View FIGURE 15 ) considering the distinctly incurved metasoma, narrowed temples and carapace with yellowish band in basal 1/3, but the two species can be separated by the following characters: posterior excavation of head very deep (> 35%) ( Figs 78G View FIGURE 78 , 80H View FIGURE 80 ) (versus less deep (25–35%) in C. (M.) bullatus ( Fig. 16H View FIGURE 16 )); pterostigma 1.9 × longer than wide ( Figs 78A View FIGURE 78 , 80A View FIGURE 80 ) (versus 3.1 × ( Fig. 16A View FIGURE 16 )); metasoma in posterior view without convexity (versus with a plug-like convexity ( Fig. 16F View FIGURE 16 )).

Description. Holotype, female, length of body 3.1 mm, of fore wing 2.3 mm.

Head. Head transverse, width of head 3.2 × its dorsal length; occiput deeply excavated; antenna slightly widened medially; antennomeres 16, length of 3 rd and penultimate antennomeres 3.5 × and 1.0 × their width, respectively; eye 1.0 × as long as temple in dorsal view; OOL: OD: POL=22: 6: 13; temples narrowed posteriorly; frons and vertex very finely striate-rugose ( Fig. 78G View FIGURE 78 ); face flat, longitudinally punctate-rugose; clypeus evenly convex, transversely striate-rugulose; face 1.9 × wider than high; eyes about parallel ( Fig. 78F View FIGURE 78 ).

Mesosoma. Length of mesosoma 1.5 × its height; side of pronotum and mesopleuron moderately reticulate-rugose, ventrally densely setose ( Fig. 78B View FIGURE 78 ); scutellum reticulate-rugose; scutellar suture comparatively deep, narrow, with carinae; propodeum coarsely rugose, lateral tubercles very small and weak ( Fig. 78C View FIGURE 78 ).

Wings. Vein r straight; marginal cell 0.8 × as long as pterostigma; pterostigma 3.1 × longer than wide; r: 3-SR: SR1=12: 13: 48; SR1 straight; marginal cell 2.0 × longer than second submarginal cell; 1-CU1: 2-CU1=11: 27; 2-R1 indistinct ( Fig. 78A View FIGURE 78 ).

Legs. Hind coxa punctate laterally; length of hind femur and tibia 3.5 × and 3.7 × their maximum width, respectively; length of inner hind tibial spur 0.4 × hind basitarsus.

Metasoma. Length of carapace 2.1 × its maximum width in dorsal view, widest at middle, apically rounded; base of carapace striate-rugose, up to middle, posteriorly rugose-striate ( Fig. 78E View FIGURE 78 ); carapace in lateral view 2.6 × longer than high, posteriorly rounded, posterior height of metasoma 1.6 × its anterior height ( Fig. 78D View FIGURE 78 ); apex of metasomal carapace distinctly incurved and ventral opening of carapace 0.7 × as long as carapace.

Colour. Body black; antenna bicoloured, 3 rd –8 th antennomeres yellow and remainder of antenna brown, palpi light brown; pterostigma light brown; middle of wing and its veins medium dark brown, but vein 1-M and parastigma light yellowish; legs almost entirely yellowish brown but apex of hind femur and hind coxa dark brown, hind tibia with rather long light base; carapace with yellowish band in basal 1/3.

Male. Antennomeres 22, antenna filiform, not widened medially ( Fig. 80I View FIGURE 80 ); temple parallel-sided behind eyes ( Fig. 80H View FIGURE 80 ); metasomal carapace narrowed to apex in dorsal view ( Fig. 80E View FIGURE 80 ) and apically longer dorsally than ventrally ( Fig. 80D View FIGURE 80 ); apical aperture in posterior view medium-sized, nearly round and median process of aperture horizontal and oval ( Fig. 80F View FIGURE 80 ); other characters as in female.

Biology. Unknown.

Distribution. China (Fujian, Guangdong, Zhejiang).

Etymology. Named after the transversely striate-rugulose clypeus of this species: “ stauros ” is Greek for crosswise, “ rhytis ” is Greek for wrinkle.