Sierola brevicaputa, 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 brevicaputa sp. nov.

Figure 1

Material examined.

Holotype: China • ♀; Zhejiang Province, Changshan ; 28°54.42'N, 118°31.05'E; Aug. 1980; Sh.J. Yang leg.; No. 202016911.

Description.

Holotype: Female. Body length = 1.52 mm. Color. Body light castaneous. Mandible light castaneous, teeth yellowish. Antenna yellow. Legs yellow to light castaneous. Forewing hyaline; veins, prestigma and pterostigma pale yellow nearly colorless. Pubescence. Body with short sparse setae. Forewing with dense setae; R2c and 1Cu2c nearly glabrous. Head (Fig. 1A-C ). Head about as wide as long, WH/LH = 0.96; DH/LH = 0.61. 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 extending back into frons, not recurved apically in lateral view. Antennal scrobal carina absent. Eye protuberant. Frons and vertex coriaceous with punctures separate more than 2.0 × its own diameter. WF/LE = 1.18; LE/DEV = 1.45. Anterior ocellus distinctly far away from supra-ocular line; POL/AOL = 1.38; OOL/WOT = 1.22; DAO = 0.025 mm. Vertex crest almost straight; sides of head behind eyes rounded. Occipital carina absent. Malar space absent. Gena coriaceous. Head thickened in lateral view (Fig. 1C ). Mesosoma (Fig. 1D, E ). DT/LT = 0.41. Pronotum coriaceous; dorsal pronotal area shorter than wide, with shallow punctures; pronotum distinctly sloping in lateral view (Fig. 1E ). Mesoscutum coriaceous with shallow sparse punctures; parapsidal signum weak; mesoscutellum coriaceous, mesoscutellar fovea present. Metanotum coriaceous, 0.24 × mesoscutellum. Metapectal-propodeal complex coriaceous; metapectal-propodeal disc half as long as wide; lateral marginal carina complete; prespiracular propodeal depression oblong; anterior metapleural area smooth; metapleural line with three pits. Propleuron coriaceous. Mesopectus coriaceous; subalar impression present; mesopleural pit present; ventral surface of mesopectus with fovea near mesocoxa; mesodiscrimen present as trace. Forewing (Fig. 1F ). Rs2v 0.97 × Rs&M2v. Metasoma. Smooth. Metasomal sternum I with median longitudinal carina; metasomal sterna II-IV with ‘V’ shaped depression medially.

Male. Unknown.

Etymology.

The specific name " Sierola brevicaputa " is a compound Latin word of " brevi " (= short) and " caput " (= head) which refers to the head of this species wider than long.

Host.

Larvae of Haplochrois theae (Kusnezov, 1916).

Distribution.

China (Zhejiang).

Comments.

This species can be distinguished from other species of this genus by having head about as long as wide, sides of head behind eyes rounded, pronotum distinctly sloping in lateral view, mesoscutum longer than mesoscutellum, and body light castaneous.

Figures

Figure 1. Sierola brevicaputa sp. nov., holotype, female A head, frontal view B mandible C head, lateral view D mesosoma (except prothorax), dorsal view E mesosoma, lateral view F forewing. Scale bars: 0.15 mm (A, C-F); 0.05 mm (B).