Potamocypris variegata (Brady and Norman, 1889) (Figure 8G, H) Cypridopsis variegata Brady and Norman, 1889 Potamocypris variegata (Brady and Norman, 1889) nov. comb. Daday 1900 Remarks This species has a wide, probably Holarctic distribution (see review of distribution in Meisch 2000), but this is the first report from north-east Asia. It is often found in stagnant and slow flowing waters with dense vegetation (Meisch 2000). During our surveys, Potamocypris variegata was found at only one locality (locality 35), in the lower reaches of a river. Previously, Kim and Min (1991a) reported Potamocypris mastigophora (Meuthuen, 1910) (as Potamocypris producta (Sars, 1924)) from Jeju Island. Their specimens were ‘severely damaged’ by formalin, and they noted that they were unable to illustrate their specimens in detail (Kim and Min 1991a). Their species determination therefore remains questionable, but as their specimens have five spine-like setae on the final segment of the maxillula (in contrast to four in P. variegata), they are clearly a different species.

Published as part of Smith, Robin James, Lee, Jimin & Chang, Cheon Young, 2014, Nonmarine Ostracoda (Crustacea) from Jeju Island, South Korea, including descriptions of two new species, pp. 37-76 in Journal of Natural History 49 (1) on page 64, DOI: 10.1080/00222933.2014.946110, http://zenodo.org/record/4002512