Taxonomic Revision of the Marine Genus Phallodrilus Pierantoni (Oligochaeta, Tubificidae), with Descriptions of Thirteen New Species1

• Published in: Zoologica Scripta
• Main Author: ERSéUS, CHRISTER
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1979
• Subjects: Arctic; Arctic Ocean; Indian; Iceland
• Online Access: http://dx.doi.org/10.1111/j.1463-6409.1979.tb00631.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1463-6409.1979.tb00631.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1463-6409.1979.tb00631.x

The taxonomy and morphology of Phallodrilus Pierantoni, 1902 are studied on the basis of material from various geographical areas. P. sabulosus sp.n., P. exiguus sp.n., P. tenuissimus sp.n., P. caudatus sp.n., P. planus sp.n. and P. extremus sp.n. are described from tropical and subtropical parts of the NW Atlantic, the four last‐mentioned species being void of alimentary canal. A polytypic species is established for the European P. rectisetosus rectisetosus subsp.n. and the NW Atlantic P. rectisetosus deminutius subsp.n. P. marionensis sp.n. and P. inconspicuus sp.n. are reported from the S Indian Ocean, P. firmus sp.n. from Iceland. Three deep‐sea species, P. remus sp.n., P. styloatriatus sp.n. (both N Atlantic), and P. simplidentatus sp.n. (from High Arctic Ocean) are described, and morphological notes and anew record are given for P. profundus Cook. Studies on types and other material enable morphological notes on P. minutus Hrabe', P. coeloprostatus Cook, P. obscurus Cook, P. parviatriatus Cook, P. prostatus (KnÖllner) and P. albidus Jamieson. The definition of the genus is modified, and the relation of Phallodrilus to other genera within the sub‐family Phallodrilinae is briefly discussed. Twenty‐three species of Phallodrilus are keyed out, principally on the basis of differences in the sexual organs of the different species.