Alonella excisa (Fischer, 1854) .

Littoral phytophilous species, rare in studied material, found in two lakes (S5, S14) and a river (A37). Common in China (Ji et al. 2015). Species is presumably cosmopolitan (Smirnov, 1996), common in temperate and subtropical regions, rare in tropics. Recent studies revealed a high level of genetic divergence within the species, which probably indicates the presence of a species-complex (Neretina et al. 2021). For description see Alonso (1996).