Kalyptorhynchia (Platyhelminthes: Rhabdocoela) from KwaZulu-Natal (South Africa), with the description of six new species Author Willems, Wim R. Author Reygel, Patrick Author Steenkiste, Niels Van Author Tessens, Bart Author Artois, Tom J. text Zootaxa 2017 4242 3 441 466 journal article 36297 10.11646/zootaxa.4242.3.2 0abf37ce-8190-42a4-87bc-96f3c8e10a38 1175-5326 376905 C67937C9-844F-461E-AABB-121B9C3CE5FA Duplacrorhynchus heyleni Artois & Schockaert, 1999 ( Fig. 5 A–B) New locality. iSimangaliso Wetland Park , Kosi Bay estuary, eastern shore of main lake, water plants, salinity 3– 4‰, December 15, 2009 (collected by Xander Combrink ). Known distribution. Tanzania , Zanzibar , widely distributed in mangrove sand flats (see Artois & Schockaert 1999 ). Material. Several animals studied alive. One whole mount and three serially-sectioned individuals (HU, nos VII.3.43–VII.3.46). Additional remarks. One individual measured on whole mount, considerably larger ( 1.4 mm ) than those from Zanzibar ( 1 mm ; see Artois & Schockaert 1999 ). Habitus and internal organisation almost identical to the original description, showing all diagnostic features of the taxon ( Artois & Schockaert 1999 ), the only difference being the shorter length of the common genital atrium in comparison with that of specimens from Zanzibar. This observation could, however, be the result of the slightly-different orientation of the sections. The South African specimens occur in a brackish habitat with very low salinity, whereas on Zanzibar they were only found in pure marine habitats. This seems to indicate that this species is euryhaline.