First description of soft body parts of Ambtonia Malz and Nipponocythere Ishizaki (Ostracoda) from Korea with details on the genera's geographic and paleogeographic distribution

Revision of the Semicytherura henryhowei group (Crustacea, Ostracoda) with the new records from Korea

“…Prior to the study of Yamada et al (2005), several S. henryhowei morphotypes have been recognized (see e.g., Okubo 1980). Phenotypic plasticity is rather common in shallow marginal marine genera [for detailed discussion on morphological variation in marginal marine ostracods, see Jöst et al (2021)], and Semicytherura species primarily inhabit inner bays, tolerating brackish environments, and are often associated with plants (Boomer and Eisenhauer 2002;Szczechura and Aiello 2003;Yamada et al 2005;Schellenberg 2007). Yamada et al (2005) studied more than 200 specimens of different S. henryhowei morphotypes from Japan and found that they are, in fact, four separate species: S. henryhowei, S. kazahana, S. slipperi Ikeya, 2005, andS.…”