12. Hydromya Robineau-Desvoidy, 1830 (New record)

(Figs. 31, 47–48, 66)

Hydromya Robineau-Desvoidy, 1830: 691 . Type species: Hydromya coeruleipennis Robineau-Desvoidy, 1830 (original designation) [= Hydromya dorsalis Fabricius, 1775].

Diagnosis. Male sternite 4 with a pair of cylindrical processes. Anepisternum and anepimeron bare. Subalar setae absent. Wing hyaline with 5–7 isolated dark spots; crossvein dm-cu curved.

Remarks. This monotypic genus contains a single described species, Hydromya dorsalis (Fabricius, 1775), which is restricted to the Palearctic Region.

Before our study, Hydromya had never been recorded from China. We found 2 males and 1 female H. dorsalis from Xinjiang and 1 male and 1 female from Inner Mongolia, both of which locations are in the Palearctic Region of China .

Specimens examined. 1♂, CHINA, Xinjiang, Wulumuqi, 890 m, 1959. VIII. 23, Afu Tian (IZCAS) ; 1♂, CHI- NA, Xinjiang, Shufu, 1979. VIII. 18, Jikun Yang (CAU) ; 1♀, CHINA, Xinjiang, Wulumuqi, 890 m, 1959. IX. 1, Changqing Li (IZCAS) ; 1♂, CHINA, Inner Mongolia, Hulunber, 854 m, 2015. VII. 23, Li Shi (IMAU) ; 1♀, CHINA, Inner Mongolia, Hulunber, 850 m, 2016. VII. 7, Li Shi (IMAU) .