Bethylus sinensis Xu, He & Terayama, 2002

Wang, Chung-Hong, He, Jun-Hua & Chen, Xue-Xin, 2021, Taxonomy of Bethylus (Hymenoptera, Bethylidae) from China with description of nine new species, Zootaxa 4974 (2), pp. 361-382 : 379-380

Bethylus sinensis Xu, He & Terayama, 2002

Fig. 10

Bethylus sinensis Xu, He & Terayama, 2002: 112–113 .

Description. Holotype ( Fig. 10a ). Female. Body length 2.92 mm. Forewing length 0.18 mm.

Color. Body dark castaneous to black. Mandible dark castaneous, teeth castaneous. Antenna yellow-brown, castaneous distad; tegula castaneous. Legs dark castaneous, tibiae and tarsi yellow.

Pubescence. Body with setae in different density, denser in legs. Antenna with appressed short setae.

Head ( Fig. 10 b-e). Head distinctly longer than wide, LH 1.26 × WH. Mandible with four apical teeth; upper most with apex rounded. Median clypeal lobe weak with apex rounded; median clypeal carina slightly extending posterad into frons. Antennomeres II–VI in ratio of 1.20: 0.90:0.95:1.12:1.0 in length and respectively 1.90, 1.55, 1.38, 1.54, 1.53 × width; antennal scrobal carina absent. Frons and vertex coriaceous with shallow sparse punctures. WF 1.19 × LE. LE 0.97 × DEV. Anterior ocellus far away from eyes; frontal angle of ocellar triangle acute; POL 1.49 × AOL; OOL 1.83 × WOT; DPV 0.93 × DAO. Vertex crest straight. Sides of head posterior to eyes almost parallel. Occipital carina absent. Malar space narrow. Gena coriaceous; ventral area coriaceous and flat.

Mesosoma ( Fig. 10 f-g). Pronotum coriaceous; dorsal pronotal area distinctly longer than wide with shallow punctures; posterior margin straight ( Fig. 10f ). Mesoscutum coriaceous with few shallow punctures; mesoscutum 0.77 × mesoscutellum; parapsidal signum absent. Mesoscutellum coriaceous with pair of oval pits ( Fig. 10f ). Dorsal surface of metapectal-propodeal disc coriaceous, medially elevated; lateral marginal carina of metapectal-propodeal disc complete, weak basally; propodeal declivity coriaceous; anterior metapleural area coriaceous, metapleural line with two pits; lateral surface of metapectal-propodeal complex coriaceous. Propleuron coriaceous. Mesopectus coriaceous with shallow punctures; mesopleural pit present; mesopleural fovea absent.

Forewing. Extremely small, oval, extending to one fifth of metapectal-propodeal complex.

Metasoma. Metasomal terga weakly coriaceous, apical margin shiny; median longitudinal sulcus of first metasomal tergum fovea-like nearly invisible. Metasomal sterna weakly coriaceous; first metasomal sternum coriaceous, median longitudinal carina present on basal half.

Male. Unknown.

Type material. Holotype ♀ ( ZJUH), China, Liaoning Province, Shenyang, Dongling , vi-vii.1994, Juxian Lou, No. 947820.

Specimen examined. Holotype ♀ ( ZJUH), China, Liaoning Province, Shenyang, Dongling, vi-vii. 1994, Juxian Lou, No. 947820; ♀ ( ZJUH), China, Hebei Province, Zhangjiakou , Xiaowutai Mountain , 20–23.viii.2005, Jingxian Liu, No. 200609404.

Distribution. China (Hebei, Liaoning).

Figures

FIGURE 10. Bethylus sinensis Xu, He & Terayama, 2002. holotype, ♀. a. Habitus lateral; b. Head, frontal view; c. Mandible; d. Antenna; e. Head, lateral view; f. Mesosoma, dorsal view; g. Mesosoma, lateral view. Scale bars: 0.15 mm.