Sinotilla spinicauda (Chen, 1957), comb. nov.

(Figs 30–32)

Smicromyrme spinicauda Chen, 1957:210, ♀. Type locality:“Tienmushan

[= Mt. Tianmu-shan]” (Zhejiang, China). Holotype: ♀ (TARI), examined .; LELEJ (2005: 64).

Type material examined. HOLOTYPE: ♀ (Figs 30–32), Mt.Tianmu-shan, W. Zhejiang, China, 17.viii.1936, T. C. Maa leg. (TARI).

Diagnosis. Female. This species is similar to Si. belokobylskiji Lelej, 1995, Si. calopoda Okayasu, 2017, Si. lambirensis Lelej, 1996, Si. ohbayashii Okayasu, 2017, and Si. petina (Mickel, 1937) in having the diagnostic characters of group 2 (OKAYASU 2017; T2 with a basal median pale spot of setae and black integument), but differs in the following combination of characters: mesosoma weakly convergent posteriorly (subparallel in Si. belokobylskiji, Si. calopoda, Si. lambirensis, Si. ohbayashii, and Si. petina); scutellar scale narrow and trilobed (not trilobed in others), median lobe posteriorly turning into median longitudinal carina extending through propodeal face (not turning into carina in Si. ohbayashii; unknown in Si. petina), dorsal edge of postscutellar carina strongly undulating (very weakly undulating in Si. belokobylskiji, Si. calopoda, and Si. lambirensis); legs entirely yellowish red (black and yellowish red in Si. calopoda); T2 with apical narrow band of dense, appressed golden setae, slightly narrowed medially (slightly widened in others); S2–S3 with apical narrow band of dense, appressed golden setae (metasomal sterna without such bands in Si. petina); T2 and S2 polished and strongly shining between punctures (micro-punctate and dimly shining in Si. calopoda).

Male. Unknown.

Distribution. China: Zhejiang (CHEN 1957).

Remarks. This species is known from the holotype only.