Family Daphniidae

Ceriodaphnia cornuta Sars, 1888 . Common in winter, in all types of waters; more rare in spring, found in one reservoir and two ponds. Taxon of unclear status, presumed to be pantropical. This species was described from Australia. C. rigaudi Richard, 1884, described from North Vietnam, is presumed to be a form of C. cornuta (Rzoska 1956; Kotov & Ferrari 2011) but future revision is needed.

Scapholeberis kingi Sars, 1888 . Common in winter, in all types of water bodies, in spring encountered only once in a paddy field. Littoral species, associated with water surface. Paleotropical, common in South-East Asia. For description, see Dumont & Pensaert (1983).

Simocephalus cf. heilongjiangensis Shi & Shi, 1994 . Rare, encountered in one reservoir, one pond and two rivers. Littoral species, associated with vegetation; all Simocephalus species are able to attach themselves to the substrate. The heilongjiangensis -complex in Asia needs revision, taxonomic status of populations from South-East Asia is unclear (Sinev & Korovchinsky, 2013). For description see Orlova-Bienkowskaya (2001).

Simocephalus congener (Koch, 1841) . Encountered once in winter, in Manning reservoir (loc. 34). Littoral species, associated with vegetation. For description, see Orlova-Bienkowskaia (2001). This species is close to S. expinosus, but, according to Orlova-Bienkowskaya (2001), it is a separate species, which differs from S. expinosus by the morphology of the postabdominal claw, having a pecten of 18–22 spines on the outer side instead of 8–12 in S. expinosus . Recorded for China only once, in Potatso National Park in Shangri-La (Xiang et al. 2015).

Simocephalus mixtus (O. F. Mueller, 1776) . Very common species in the area, encountered in reservoirs, rivers and in paddy fields once, but not present in ponds; in winter encountered more frequently than in spring. Littoral species, associated with vegetation. Widely distributed species, recorded in all climatic zones of North Hemisphere, including China (Orlova-Bienkowskaia, 2001). For description, see Orlova-Bienkowskaia (2001).