Hrabe, 1954
Description
Middle-sized worms. Prostomium prolonged, conical. Forebody thinner than postclitellar segments. External secondary annulation in forebody well expressed. Chaetae two per bundle, sigmoid with nodulus, simple-pointed, about 130 µm long. Male pores in X, on large conical protuberances (porophores). Spermathecal pores in XI and XII. Pharyngeal glands in V-VII(VIII). Chloragogen tissue on oesophagus beginning from VIII. Several pairs of transversal vessels in each posterior segment. Atria pyriform, with very thick (about 20 µm) muscular layer, their ectal portion protruding above body surface inside large protuberances terminating in small penes. Two pairs of spermathecae, with large ovoid ampulla, and distinct short duct. Length 18-20 mm, segment number 70-80. Differing from congeners mostly in the combination of the internal characters, and in presence of large external porophores.
Burrowing in sediment.
Distribution
Austria, Germany.
Ecology
In freshwater, groundwater.
Reproduction
Sexual only. Eggs laid in cocoons.
Literature
Hrabe, 1954: 183-188, Figs 1-4; Cook, 1971a: 231, Fig. 5.12C; Kasprzak, 1981: 203, Figs 813-816.