Semernodrilus, Timm, 2020

Timm, Tarmo, 2020, A literature revision of Pararhyacodrilus Snimščikova, 1986, with the erection of a new genus, Semernodrilus gen. nov. (Oligochaeta, Tubificidae, Rhyacodrilinae), Zootaxa 4786 (3), pp. 431-436 : 434

Semernodrilus gen. nov.

Type species by monotypy: Pararhyacodrilus confusus Semernoy, 2004

Diagnosis. Rhyacodriline tubificids with testes and spermathecae in IX, atria and male pores in X. No hair chaetae; bifid chaetae several per bundle; penial chaetae at male pores with reduced teeth. Atrial ampullae short and covered with prostatic cells, ducts short or lacking, penial structures absent. Esophagus very long (in V–X), spermathecal ampullae connected with it in IX. Coelomocytes unknown (absent?).

Etymology. Named in honour of Dr. V.P. Semernoy, the most eminent researcher of the Baikalian oligo- chaetes.