Hylaeus (Hylaeus) medialis Morawitz, 1890

Hylaeus medialis Morawitz, 1890: 384 –385, ♀ (lectotype: ♀, designated by Dathe 1986b: 31, “Kansu, Atu-Lunva [China]”, ZISP); Chen & Xu 2009: 49 (Sichuan); Dathe & Proshchalykin, 2017: 26 (Gansu, Sichuan, Yunnan).

Hylaeus bimaculatus Chen & Xu, 2013: 341 –344, ♂, ♀ (holotype: ♂, the Napa Lake La Prairie protection zone, Zhongdian County, Yunnan Province, China, 3280 m, 8.VI.2012, leg. Huan Chen, CAUB). Synonymized by Dathe & Proshchalykin, 2017: 26.

Material examined. CHINA. 1 ♂, Khаbirgа, Bаgаtsаdаmin Lаke, E Тsаidаm, 3-11.VI.1895, V. Rоbоrоvskу, Р. Kоzlоv.

Distribution. Chinа (Gаnsu, * Qinghаi, Siсhuаn, Yunnаn).