Michaelsen, 1901b
Type species Lamprodrilus wagneri Michaelsen, 1901b
Number of species 26. In NWE, two species:
Lamprodrilus isoporus Michaelsen, 1901b
Lamprodrilus mrazeki Hrabe, 1929b
Description
Middle-sized to large, mostly unpigmented worms. Chaetae two per bundle, sigmoid with nodulus, simple-pointed, seldom absent. Usually two pairs of testes, atria and male pores, in X and XI. Atria tubular, terminating in penes. Ovaries in XII; one or several pairs of spermathecae in subsequent segments. Differing from other lumbriculid genera in having basically two pairs of male ducts and pores.
Burrowing in sediment.
Distribution
Most species in Lake Baikal only, some species elsewhere in the Palaearctic.
Ecology
In freshwater, mostly in cool clean lakes.
Reproduction
Mostly sexual only, with eggs laid in cocoons. Asexual reproduction by architomy (fragmentation) in one species.
Literature
Michaelsen, 1901b: 151; Michaelsen, 1901c: 150-151, 157-160; Cook, 1971a: 206-207; Chekanovskaya, 1981: 414-416; Hrabe, 1981: 109; Kasprzak, 1981: 208.