Giani and Rodriguez, 1994
Description
Small pink worms. Prostomium bluntly conical. External secondary annulation beginning from III. Chaetae two per bundle, sigmoid with nodulus, simple-pointed, generally 75-87 µm long, but only 58-61 µm in II. Pharyngeal glands poorly developed in III-V. No blind lateral vessels in posterior segments. Male pores in X, clitellum in X-1/2 XII. Atria pear-shaped, without efferent duct; distal half modified as highly muscular pseudopenis opening on small protuberance. Spermathecae, with pores in XI, consisting of large sacculate ampulla and long narrow duct. Segment number about 70. Differing from congeners mostly in the combination of the internal characters, particularly in its very short and muscular, pyriform atrium.
Burrowing in sediment.
Distribution
France.
Ecology
In freshwater, rare.
Reproduction
Sexual only. Eggs laid in cocoons.
Literature
Giani and Rodriguez, 1994: 36-38, Fig. 3.