Brinkhurst and Cook, 1966
Description
Medium-sized smooth red worms. All chaetae as bifid crotchets. Anterior chaetae up to 10 per bundle, upper tooth usually a little longer but only slightly thinner. Penial sheaths 20-48 times (exceptionally less) as long as their proximal width, considerably longer than body diameter, with thick wall, especially on one side near "head", but only one layer visible; lumen 1.5 times as wide as in Limnodrilus claparedeanus. Dark chloragogen tissue on oesophagus beginning from V. Length about 20 mm, segment number 100-135. Differing from Limnodrilus claparedeanus in its thick-walled penial sheaths.
Burrowing in sediment.
Distribution
Eastern North America, evidently introduced into Europe.
Ecology
In freshwater, including polluted rivers and canals.
Reproduction
Sexual only. Eggs laid in cocoons.
Literature
Brinkhurst and Cook, 1966: 15, Fig. 7F; Brinkhurst and Jamieson, 1971: 472, Fig. 8.3P; Haaren, 2002: 42-43, Fig. 2.