Five new records of ostracods (Crustacea) from Korea Author Lee, Sue Yeon Author Yoo, Jung Sun Author Kim, Seung Tae text Journal of Species Research 2017 6 220 226 http://dx.doi.org/10.5281/zenodo.4738799 journal article 10.12651/JSR.2017.6 2713-8615 13160935 4. Euconchoecia cf. chierchiae Muller, 1890 (NIBRIV0000753782) ( Fig. 4 ) Synonymy. Euconchoecia chierchiae n. sp. - Muller (1890) : p. 277, PI. 28, Figs. 1 -10. For complete synonymy see Graves (2011) . Locality in Korea . South Korea , Jeju Island , Chuja Island , Station 5, 33°43.63 ʹ N 126°21.61 ʹ E . Fig. 3. Pyrocypris noctiluca , juvenile female: A - LV, lateral view from the outside; B - posterior end of the carapace; C - rostrum; D - uropodal lamellae. D, not to scale. Fig. 4. Euconchoecia chierchie , female lateral view from the right side. Identifier. Ivana Karanovic Diagnosis. Large ostracod, about 1.2 mm long ( Fig. 4 ). In lateral view elongated, and surface smooth. Ventral margin curved smoothly into posterior margin. Postero-dorsally both valves with a small spine. Anteriorly rostrum curves ventrally, pointed at the tip. Surface of the shell smooth. Remarks. We identified the Korean species as E. cf. chierchie , because it is slightly slenderer than in the description provided by Graves (2011) . According to the same authors, there seems to be a lot of morphological variability in E. chierchie , which may indicate several cryptic species. Fig. 5. Euconchoecia pacifica , A-D, female; F, male: A - lateral views from the right side; B - lateral view from the right side; C - details of the surface ornamentation; D - details of the antenna; E - uropodal lamellae; F - details of the uropodal lamella. B, D-E, not to scale. Distribution. Distributed in all oceans between 40°N and 40°S .