Czerniavsky, 1881
Type species Nais litoralis Müller, 1784.
Number of species 12. Three species known from NWE:
Paranais botniensis Sperber, 1948
Paranais frici Hrabe, 1941
Paranais litoralis (Müller, 1784)
Description
Naididae with uniform bifid crotchets only, with dorsal bundles beginning from V. No eyes. In mature individuals, male pores in V.
Distribution
Cosmopolitan
Ecology
Mostly in brackish water.
Reproduction
Mostly asexual, by paratomy (budding). Mature individuals and sexual reproduction rare or seasonal.
Literature
Czerniavsky, 1881: 310; Sperber, 1948: 82-83; Brinkhurst and Jamieson, 1971: 317; Chekanovskaya, 1981 248-249; Hrabe, 1981: 35; Kasprzak, 1981: 134-135.