Chelonus (Microchelonus) erugatus, 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 : 39-43

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.10676038
persistent identifier	https://treatment.plazi.org/id/2B5587AD-F028-7353-FF39-6EECFB34B910
treatment provided by	Plazi
scientific name	Chelonus (Microchelonus) erugatus
status	sp. nov.

Treatment

Chelonus (Microchelonus) erugatus sp. nov.

Figs 29–32 View FIGURE 29 View FIGURE 30 View FIGURE 31 View FIGURE 32

Material examined. Holotype: female, Nalati Grassland , Xinjiang Autonomous Region, China, 19–20. VII.2005, Hongying Zhang, No. 200602754 ( ZJUH) . Paratypes: 1 male, Tianlu Lake , Urumqi, Xinjiang Autonomous Region, China, 25.VII.1991, Junhua He, No. 920162 ; 11 females, same label data as holotype, but Nos. 200602734, 200602743, 200602743, 200602714, 200602706, 200602848, 200602762, 200602712, 200602713, 200602760, 200602750 ; 2 females, same label data as holotyp, but Deying Ma , 24. VI.1997 and Nos. 20037181, 20037154 ; 1 male, same label data as holotype, but Min Shi, and No. 200602659 ; 2 males, Changbai Mt. , Jilin Prov., China, 4–20. VIII.1993, Juxian Lou, Nos. 976445, 951977 .

Diagnosis. This new species is similar to C. (M.) microphtalmus Wesmael, 1838 , sharing the metasoma narrowed towards apex and straight striae at basal 70% of metasoma ( Fig. 30E View FIGURE 30 ), and temple widened behind eyes ( Fig. 30G View FIGURE 30 ), but the two species can be separated by the following characters: head 3.5 × wider than long ( Fig. 30G View FIGURE 30 ) (versus 1.8–1.95 × in C. (M.) microphtalmus ); antenna of female slightly longer than head and mesosoma combined ( Fig. 30J View FIGURE 30 ) (versus as long as body); tubercles distinct and strong ( Fig. 30C View FIGURE 30 ) (versus small and weak).

Description. Holotype, female, length of body 3.2 mm, of fore wing 2.6 mm.

Head. Head transverse, width of head 3.5 × its dorsal length; occiput deeply excavated; antennomeres 16, antenna slightly widened medially, length of 3 rd and penultimate antennomeres 2.2 × and 1.4 × their width, respectively ( Fig. 30J View FIGURE 30 ); eye 1.2 × longer than temple in dorsal view; OOL: OD: POL=15: 5: 15; temple widened behind eyes; vertex and frons striate-rugulose, shiny ( Fig. 30G View FIGURE 30 ); face flat and shiny, transverse-longitudinally striate-rugose, width of face 1.7 × its height; eyes about parallel; clypeus densely punctulate, apical margin slightly sinuate, interspaces shiny, clypeus 1.7 × wider than high; distance between tentorial pits 1.4 × distance between pits and eyes ( Fig. 30F View FIGURE 30 ).

Mesosoma. Length of mesosoma 1.5 × its height; side of pronotum and mesopleuron completely punctate ( Fig. 30B View FIGURE 30 ); notauli slightly developed, anterior part of mesoscutum dense punctulate and posterior part coarsely reticulate-rugose; scutellum slightly convex, smooth medially, rugose laterally; scutellar suture comparatively deep, with carinae; propodeum coarsely rugose, lateral tubercles weak and small ( Fig. 30C View FIGURE 30 ).

Wings. Vein r straight; marginal cell 0.9 × as long as pterostigma; pterostigma 3.4 × longer than wide; r: 3-SR: SR1=10: 13: 51; SR1 slightly sinuate; marginal cell 1.8 × longer than second submarginal cell; 1-CU1: 2-CU1=10: 31; 2-R1 short ( Fig. 30A View FIGURE 30 ).

Legs. Hind coxa punctate laterally, densely setose, shiny; hind femur rather robust, length of hind femur, tibia and basitarsus 2.5 ×, 4.0 × and 5.8 × their maximum width, respectively; length of inner hind tibial spur 0.5 × hind basitarsus.

Metasoma. Length of carapace 2.0 × its maximum width, narrowed towards apex; carapace striate-rugose up to basal 70%, punctate apically ( Fig. 30E View FIGURE 30 ); carapace in lateral view 2.6 × longer than high, maximum height moderate, posterior height of metasoma 1.3 × its anterior height ( Fig. 30D View FIGURE 30 ); carapace slightly incurved apically.

Colour. Body black;antennomeres brown; mandible yellow, tip dark; palpi black; pterostigma brown; parastigma dark brown; middle of wing and its veins dark brown, wing base and its veins light yellowish; legs entirely black; carapace entirely black.

Male. Antennomeres 19, antenna filiform, not widened medially ( Fig. 32I View FIGURE 32 ); eyes slightly diverging ( Fig. 32G View FIGURE 32 ); metasomal carapace widest at middle in dorsal view ( Fig. 32E View FIGURE 32 ); apical aperture in posterior view medium-sized, oval and median process of aperture horizontal, nearly round ( Fig. 32F View FIGURE 32 ); other characters as in female.

Biology. Unknown.

Distribution. China (Jilin, Xinjiang).

Etymology. Named after its smooth scutellum: “ erugo ” is Latin for clear of wrinkles, smooth.