Sierola leleji, Wang & He & Chen, 2021

Wang, Chung-Hong, He, Jun-Hua & Chen, Xue-Xin, 2021, Taxonomy of Sierola Cameron (Hymenoptera, Bethylidae) from China with three new species, Journal of Hymenoptera Research 84, pp. 405-415 : 405

Sierola leleji sp. nov.

Figure 2

Material examined.

Holotype: China • ♀; Zhejiang Province, Changshan ; 28°54.42'N, 118°31.05'E; Aug. 1980; Sh.J. Yang leg.; No. 202016914 . Paratypes: China • 3♀; same collection data as for preceding; No. 202016912, No. 202016913, No. 202016916 .

Description.

Holotype: (Fig. 2A ). Female. Body length = 1.60 mm. Length of forewing = 1.15 mm. Color. Body light castaneous. Mandible light castaneous. Antenna yellow, darker distad. Legs yellow, coxae and femora yellowish castaneous. Forewing hyaline; veins almost colorless; prestigma and pterostigma pale yellowish nearly colorless. Pubescence. Body cover with short sparse setae, denser in dorsal surface of propleuron and mesopectus. Antenna with dense appressed setae. Forewing with dense setae; R2c and 1Cu2c with sparse setae. Head (Fig. 2B-E ). Head longer than wide, WH/LH = 0.82; DH/LH = 0.57. Mandible moderately narrow at base, distinctly broader on apical half, ventral margin distinctly concave; not twisted, outwardly coriaceous; apex of mandible vertical, with four equally strong teeth. Median clypeal lobe weakly protuberant with apex rounded; median clypeal carina slightly extending back into frons, not recurved apically in lateral view. Antennomeres II-VI in ratio of 1.63: 0.91: 0.81: 1.03: 1.0 in length and respectively 1.53, 0.94, 0.68, 0.80, 0.80 × wide; antennal scrobal carina absent. Frons and vertex coriaceous with shallow punctures separate 1.5-4.0 × its diameter. Eye protuberant. WF/LE = 1.09; LE/DEV = 1.24. Anterior ocellus distinctly far away from supra-ocular line; POL/AOL = 1.53; OOL/WOT = 1.40; DAO = 0.03 mm. Vertex crest straight; sides of head behind eyes slightly outcurved. Occipital carina absent. Malar space absent. Gena coriaceous; ventral area of gena elevated in lateral view. Mesosoma (Fig. 2F, G ). DT/LT = 0.37. Pronotum coriaceous; dorsal pronotal area shorter than wide, with shallow punctures; pronotum slightly sloping in lateral view. Mesoscutum coriaceous with shallow punctures; parapsidal signum weak; mesoscutellum coriaceous with shallow punctures, mesoscutellar fovea present. Metanotum coriaceous, 0.12 × mesoscutellum. Metapectal-propodeal complex coriaceous; prespiracular propodeal depression oblong; metapostnotum without median shiny longitudinal stripe; lateral marginal carina complete; anterior metapleural area smooth; metapleural line with three pits. Propleuron coriaceous. Mesopectus coriaceous; subalar impression present; mesopleural pits present; ventral surface of mesopectus with fovea near mesocoxa; mesodiscrimen weak. Forewing (Fig. 2H ). Rs2v 0.85 × Rs&M2v; R12v intersect apical portion of Rs2v at right angle; length of pterostigma 0.53 × its width. Metasoma. Smooth. Metasomal sternum I with median longitudinal carina; metasomal sternum III with ‘V’ shape depression medially.

Variation.

Body length 1.60-1.90 mm; length of forewing 1.15-1.47 mm. Body light castaneous to castaneous; mandible light castaneous to dark castaneous. WH/LH 0.80-0.83; DH/LH 0.56-0.57; POL/AOL = 1.45-1.69; OOL/WOT = 1.27-1.40; DAO = 0.03-0.04 mm.

Male. Unknown.

Etymology.

This species is named in honor of the well-known Russian entomologist, an expert of Aculeata , Professor Arkady S. Lelej for celebrating his 75-anniversary.

Host.

Larvae of Haplochrois theae (Kusnezov, 1916).

Distribution.

China (Zhejiang).

Comments.

This species is similar to the species Sierola shimotsukeana Terayama, 2006 for the shape of head. But it can be distinguished by having 1M2c nearly rectangular, metapostnotal-propodeal disc coriaceous, and mandible light castaneous while S. shimotsukeana having 1M2c oval, posterior area of metapostnotal-propodeal disc smooth medially, and mandible black.

Figures

Figure 2. Sierola leleji sp. nov., holotype, female A habitus lateral B head, frontal view C mandible D antenna E head, lateral view F pronotum, dorsal view G mesosoma (except prothorax), dorsal view H forewing. Scale bars: 0.15 mm (A, B, E-H); 0.05 mm (C, D).