Taxonomy of the genus Elasmopus (Crustacea, Amphipoda) in Japan and South Korea, with description of a new species Author Yoshimura, Hiro https://orcid.org/0009-0005-1297-4368 Graduate School of Humanities and Social Sciences, Hiroshima University, 1 - 1 - 1 Kagamiyama, Higashihiroshima, Hiroshima 739 - 8524, Japan Author Lee, Chi-Woo 0000-0002-0763-4271 Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea Author Tomikawa, Ko 0000-0003-1521-9016 Graduate School of Humanities and Social Sciences, Hiroshima University, 1 - 1 - 1 Kagamiyama, Higashihiroshima, Hiroshima 739 - 8524, Japan text ZooKeys 2025 2025-12-02 1261 307 335 journal article 313310 10.3897/zookeys.1261.162923 8e94f76b-77a9-47d8-af11-e1f9b4f94b96 9DCB403A-2E55-4D80-B00E-9E0977AB9C00

Table 3. Uncorrected pairwise distances (p - distances) among Elasmopus species showing minimum – maximum values (mean value). “ n ” indicates the number of specimens, and “ loc. ” Indicates the number of collecting sites.

	E. koreanus (n = 3, loc. = 3)	E. lumbiniger sp. nov. (n = 6, loc. = 6)	E. mukuinu (n = 4, loc. = 4)	E. nkjaf (n = 2, loc. = 1)	E. projectus (n = 3, loc. = 2)	E. rapax (n = 6, loc. = 2)
E. koreanus	0.002–0.024 (0.016)
E. lumbiniger sp. nov.	0.198–0.205 (0.201)	0.002–0.043 (0.017)
E. mukuinu	0.202–0.207 (0.204)	0.167–0.184 (0.173)	0.003–0.050 (0.027)
E. nkjaf	0.190–0.193 (0.192)	0.185–0.191 (0.188)	0.178–0.182 (0.180)	0.006 (-)
E. projectus	0.178–0.182 (0.181)	0.158–0.170 (0.163)	0.164–0.176 (0.172)	0.187–0.191 (0.189)	0.008–0.024 (0.017)
E. rapax	0.188–0.191 (0.190)	0.187–0.198 (0.190)	0.173–0.187 (0.178)	0.160–0.167 (0.162)	0.182–0.193 (0.186)	0.000–0.003 (0.001)