Sididae Baird, 1850

Family Sididae Baird, 1850

Diaphanosoma dubium Manuilova, 1964 View in CoL . An abundant planktonic species, found in November in lakes Dazong, Qili and Tou, and also in some smaller lakes and ponds (N8, N11, N13–16, N18–21), dominant in some planktonic samples. Not found in January; in March few specimens were found in Hushan Lake (M15). Widespread in South-East and East Asia, distributed north up to the Amur/ Heilongjiang River basin, common in China ( Xiang et al. 2015; Korovchinsky 2018; Liu et al. 2018; Dumont et al. 2021).

Diaphanosoma macrophthalma Korovchinsky & Mirabdullaev, 1995 . Planktonic species, found only in November in lakes Dazong and Qili, and in some ponds and channels (N11–13). It is always less abundant than D. dubium View in CoL . Widespread in Central and East Asia from Uzbekistan to Japan ( Korovchinsky et al. 2021b), it penetrates south to North-East Thailand ( Korovchinsky & Sanoamuang 2008).

Diaphanosoma orghidani transamurensis Korovchinsky, 1986 View in CoL . Planktonic species, found only in November in lakes Gaoyou, Dazong, Luoma and Weishan, and in some smaller water bodies (N11, N18, N21). The taxon is distributed in East Asia from the Amur basin to the Philippines and North Vietnam ( Liu et al. 2018; Dumont et al. 2021).

Sida ortiva Korovchinsky, 1979 View in CoL . Littoral species, associated with vegetation; specimens are able to attach themselves to a substrate. Common in all seasons, in January it becomes subdominant species in overgrown littoral. Few males were found in November in localities N7 and N10. East Asian species, distributed from East Siberia to Bangladesh and South Vietnam ( Korovchinsky et al. 2021b). The presence of this species in East China was confirmed only recently ( Dadykin et al. 2023); all earlier records of Sida View in CoL from the region were attributed to S. crystallina (O. F. Müller, 1776) ( Xiang et al. 2015) View in CoL .