Dolerocypris ikeyai, Chang, Cheon Young, Lee, Jimin & Smith, Robin J., 2012

Chang, Cheon Young, Lee, Jimin & Smith, Robin J., 2012, Nonmarine ostracods (Crustacea) from South Korea, including a description of a new species of Tanycypris Triebel (Cyprididae, Cypricercinae), Zootaxa 3161, pp. 1-19 : 9-10

Dolerocypris ikeyai Smith & Kamiya, 2006

( Fig. 5A–D )

2006 Dolerocypris ikeyai n. sp. —Smith & Kamiya: 333–337, figs 2a–e, 4 & 5, appendix.

Material examined. One female from a small seep above a track at Gugye-ri, Yeongsan-myeon, Changnyeonggun, Gyeongsangnam-do (35º37′56.3″N, 128º33′ 54.9E) (locality 12 on Fig. 1 ), 4 June 2011. Five females from small seeps and springs along the edges of a footpath in Deokgu Valley at Deokgu-ri, Buk-myeon, Uljin-gun, (37º04′33.3″N, 129º15′27.6″E) (locality 2 on Fig. 1 ), 6 June 2011.

Remarks. Previously this species was known from the Japanese archipelago: from northern Honshu to the islands south of Kyushu, and also the Ogasawara Islands (Smith & Kamiya 2006; Smith 2011). The widespread distribution in Japan, and especially its presence on the remote Ogasawara Islands, led to the suggestion it has a high dispersal potential and may be found elsewhere (Smith 2011); thus the Korean populations are not unexpected. It is strongly related to groundwater runoff, usually found near small springs and seeps on a muddy substrate in very slowly flowing, shallow water (Smith 2011).

Figures

FIGURE 1. Localities. 1, Daegwanryeong Hill, Gangreung; 2, Deokgu Valley, Uljin; 3, estuary of Wangpicheon Stream, Uljin; 4, Yecheon; 5, Okgye Valley, Yeongdeok; 6, estuary of Goggangcheon Stream, Pohang; 7, Guryongpo, Pohang; 8, Hyeongsan River, Gyeongju; 9, Oksancheon Stream, Gyeongju; 10, Gyeongsan; 11, Upo-nup Swamp (Jjokjibeol), Changnyeong; 12, Hambak Mountain, Changnyeong; 13, Jilnal-nup Swamp, Haman; 14, Junam Reservoir, Changwon; 15, Samnak Wetland Park, the Nakdong River, Busan; 16, Dadaepo Beach, Busan.

FIGURE 5. A – D, Dolerocypris ikeyai. A, left valve, internal view (DB 40015). B, right valve, internal view (DB 40015). C, whole carapace, right lateral view (DB 40016). D, whole carapace, dorsal view, anterior to left (DB 40016). E – H, Eucypris pigra. E, whole carapace, right lateral view (DB 40017). F, whole carapace, dorsal view, anterior to left (DB 40017). G, left valve, internal view (DB 40018). H, right valve, internal view (DB 40018). I – J, Scottia pseudobrowniana. I, right valve, external view (DB 40019). J, left valve, internal view (DB 40019). Scale bar = 407 µm for A – H, 238 for I – J.