Turbellarians taxon details
Opisthocystis trifidus (Nasonov, 1935) Karling, 1956
155701 (urn:lsid:marinespecies.org:taxname:155701)
accepted
Species
Polycystis trifida Nasonov, 1935 · unaccepted
recent only
(of Polycystis trifida Nasonov, 1935) Nasonov, N. (1935). Uber den Heliotropismus der Turbellaria rhabdocoelida des Baikalsees. (Works of the Laboratory of Experimental Zoology and Morphology of Animals of the Academy of Sciences). Trav Lab Zool Exp Morph Anim, Leningrad., 4:195-204 [details] Available for editors 
Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2024). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Opisthocystis trifidus (Nasonov, 1935) Karling, 1956. Accessed at: https://www.marinespecies.org/turbellarians/aphia.php?p=taxdetails&id=155701 on 2026-06-07
Date
action
by
original description
(of Polycystis trifida Nasonov, 1935) Nasonov, N. (1935). Uber den Heliotropismus der Turbellaria rhabdocoelida des Baikalsees. (Works of the Laboratory of Experimental Zoology and Morphology of Animals of the Academy of Sciences). Trav Lab Zool Exp Morph Anim, Leningrad., 4:195-204 [details] Available for editors
additional source Evdonin, L. A. (1977). Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. [In Russian]. Fauna USSR. Turbellaria, Vol 1, Pt 1. Fauna USSR (NS), 115:1-400 [details] Available for editors
new combination reference Karling, T. G. (1956). Morphologisch-histologische Untersuchungen an den männlichen Atrialorganen der Kalyptorhynchia (Turbellaria). <em>Arkiv för Zoologi.</em> 9: 187-277. [details] Available for editors
additional source Evdonin, L. A. (1977). Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. [In Russian]. Fauna USSR. Turbellaria, Vol 1, Pt 1. Fauna USSR (NS), 115:1-400 [details] Available for editors
new combination reference Karling, T. G. (1956). Morphologisch-histologische Untersuchungen an den männlichen Atrialorganen der Kalyptorhynchia (Turbellaria). <em>Arkiv för Zoologi.</em> 9: 187-277. [details] Available for editors
Present Inaccurate Introduced: alien Containing type locality
