Three Loxocaudinae species (Ostracoda, Podocopida) from South Korea Author Yoo, Hyunsu Marine Environmental Research and Information Laboratory (MERIL), 17, Gosan-ro, 148 beon-gil, Gunpo-si, Gyoenggi-do, 15180, Republic of Korea hyunsu.yoo2011@gmail.com Author Huyen, Pham Thi Minh Department of Applied Chemistry and Biological Engineering, Graduate School Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea Author Chae, Jinho Marine Environmental Research and Information Laboratory (MERIL), 17, Gosan-ro, 148 beon-gil, Gunpo-si, Gyoenggi-do, 15180, Republic of Korea Author Karanovic, Ivana https://orcid.org/0000-0002-9002-9952 Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea ivana@hanyang.ac.kr text ZooKeys 2023 2023-01-06 1138 183 209 http://dx.doi.org/10.3897/zookeys.1138.96201 journal article http://dx.doi.org/10.3897/zookeys.1138.96201 1313-2970-1138-183 B7224B8C480848B4A2F7DDF5EAF204E2 D8897AA0E7705EB5984930D428C464BF Loxocauda cf. orientalis Figs 11 , 12 Material examined. One male, dissected on one slide (NIBRIV0000882304), shell on micropaleontological slide (NIBRIV0000882314); one female , dissected on one slide (NIBRIV0000882310) and shell on micropaleontological slide (NIBRIV0000882312); one male and female dissected on slide each, and shells on micropaleontological slide each; South Korea , Gyeongsangnam-do , Geoje-si , Irun-myeon , Jisepohaean-ro , Jisepo harbor. 34°49.919'N , 128°42.220'E , 19 May 2020 , leg. Hyunsu Yoo & Byung-jin Yoo. Brief description. Male. Carapace same as in L. orientalis (Figs 11A , 12A, B ). Differences include dorsal margin being straighter, and greatest H situated close medially. A2 (Fig. 11B ) with well-developed setulae on second and third segments. Hp (Fig. 11C ) with basal plate sub-rectangular and with three bare setae antero-distally. Lobe with sub-triangular form. No strong muscles present. Figure 11. Loxocauda cf. orientalis : male (NIBRIV0000882304, NIBRIV0000882314) A RV internal view B A2 C Hp; female (NIBR0000882310) D GF. Scale bars: 50 µm ( B, C, D ); 100 µm ( A ). Figure 12. SEM photographs of Loxocauda cf. orientalis : male (NIBRIV0000882314) A RV external view B RV internal view C muscular scar print D simple seta pore on external carapace. Other appendages same as in L. orientalis Schornikov, 2011 L ratios between segments as indicated below: A1 Six-segmented. 2.4: 1.2: 1: 1.1: 1.4: 1.3. A2 Four-segmented. 6.4: 2.9: 9.8: 1. L5 Four-segmented. 3.5: 1.9: 1: 1.2. L6 Four-segmented. 3.3: 2.4: 1: 1.3. L7 Four-segmented. 2.4: 1.9: 1: 1.2. Female. Larger than male (Fig. 13B ). L ~ 459 µm , H ~ 267 µm . Shape and all other morphological features similar to male. GF illustrated in Fig. 11D . Basal plate sub-triangular. Ovary subquadrate. With three bare setae on antero-medial margin. All other appendages same as in male. Figure 13. Internal view of female carapace A Glacioloxoconcha jeongokensis sp. nov. (NIBRIV0000882311 allotype) B Loxocauda cf. orientalis (NIBRIV0000882312) C Loxocauda orientalis Schornikov, 2011 (MABIKCR0025820).