F. Sporka, POTAMOTHRIX-TUDORANCEAI SP-N, A NEW SPECIES OF TUBIFICIDAE (OLIGOCHAETA) FROM THE ETHIOPIAN RIFT-VALLEY LAKE ZWAI (AFRICA), BIOLOGIA, 49(2), 1994, pp. 161-165
Potamothrix tudoranceai sp.n. is described from Lake Zwai of the Ethio
pian Rift Valley (Africa). It is closely related to species Potamothri
x bavaricus, P. heuscheri and P. bedoti absence of prostate gland, and
presence of pectinate setae. Potamothrix tudoranceai sp.n. is charact
erized by higher number of setae (bifid setae) in ventral bundles and
pectinate and hair setae in dorsal bundles, by other form of spermathe
cal setae, long atrium (approximately 3500 mum), double length of atri
um in comparison related species.