Family Macrothricidae

Macrothrix spinosa King, 1853 . One of the most common species in Hainan, encountered in all types of water bodies. For description, see Smirnov (1992) and Hollwedel et al. (2000), for description of the Indochina populations see Idris (1983). Species presumed to be pantropical (Smirnov 1992), common in the Oriental region. For list of records in China see Xiang et al. (2015).

Macrothrix triserialis (Brady, 1896) . Common species, encountered in all types of water bodies. For description see Smirnov (1992) and Dumont et al. (2002). Species presumed to be pantropical (Smirnov 1992), but identity of Neotropical and African populations with M. triserialis s. str ., described from Sri Lanka, is doubted (Dumont et al. 2002). In East Asia species is penetrating North up to South Korea (Kotov et al. 2012). Morphology of studied specimens fully agrees with that of population from terra typica (see Dumont et al. 2002). For list of records in China see Xiang et al. (2015).