Report on freshwater Catenulida (Platyhelminthes) from Sweden with the description of four new species Author Larsson, Karolina Author Willems, Wim text Zootaxa 2010 2396 1 18 journal article 10.5281/zenodo.193965 38d7b0ca-ac3c-4c22-8a28-fa4034b43e03 1175-5326 193965 Stenostomum sphagnetorum Luther, 1960 ( Fig. 5 I, 6 E–F) Localities. Loc. 2, 22, 25, 30. Known distribution. Finland ( Luther 1960 ) and several other European countries, USA and Africa ( Tyler et al. 2006 with references therein). Material. Several individuals studied alive. Remarks. According to Luther (1960) S. sphagnetorum can be confused with S. constrictum ( Luther 1960 ) . However, the species differs in the head shape since in S. constrictum the constriction anterior to the pharynx is more prominent. Based on these characters Luther (1960:154) decided to split S. unicolor Schmidt, 1848 and named the resulting species S. constrictum and S. sphagnetorum . Luther’s description (1960) of the habitat and the behaviour of S. sphagnetorum relate well to our findings.