Cavernocypris coreana, 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 : 8

Cavernocypris coreana elongata ( McKenzie, 1972)

( Fig. 2 I & J)

1972 ‘ Cypridopsis’ coreana n. sp., elongata n. subsp. —McKenzie: 160–162, figs 16–24.

nov. comb. 1989 Cavernocypris coreana ( McKenzie, 1972) — Marmonier et al.: 234–235, figs 5–9.

Material examined. Three females from a small trickle on Daegwnryeong Hill, Gangreung, (37°41′27″N, 128°45′38″E) (locality 1 on Fig. 1 ), 3 October 2010. Ten females from coarse sediment of a small, steep stream in Okgye Valley at Oksan-ri, Dalsan-myeon, Yeongdeok-gun, Gyeongsangbuk-do (36º20′10.4″N, 129º16′31.4″E) (locality 5 on Fig. 1 ), 5 June 2011. One hundred and twenty-five females from small seeps and springs along the edges of a footpath in the wooded Deokgu Valley at Deokgu-ri, Buk-myeon, Uljin-gun, Gyeongsangbuk-do (37º04′33.3″N, E129º15′27.6″E) (locality 2 on Fig. 1 ), 6 June 2011.

Remarks. Specimens range from translucent white through to orange-brown in colour. This is the second time this subspecies has been reported, and so far records are restricted to South Korea ( McKenzie 1972). McKenzie (op. cit.) reported and figured males from populations in caves collected during April, but all specimens recovered by us at the surface appear to be females. This suggests that this subspecies is geographically parthenogenetic, or sexual populations are restricted to subterranean habitats, or males are not present in June or October.

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 2. A – C, Bradleycypris vittata (DB 40011). A, right lateral view of whole carapace. B, dorsal view, anterior to right. C, anterior view. D – H, Tanycypris centa n. sp. D, right lateral view of whole carapace (NIBRIV 0000243261). E, left valve, internal view (NIBRIV 0000243261). F, detail of ventral margin of left valve (NIBRIV 0000243261). G, right valve, internal view (NIBRIV 0000243261). H, dorsal view, anterior to right (NIBRIV 0000243261). I – J, Cavernocypris coreana elongata (DB 40012). I, left valve, internal view. J, right valve, internal view. K – L, Cypridopsis vidua. K, dorsal view, anterior to right (DB 40013). L, left valve, internal view (DB 40014). Scale bar = 306 µm for A – C, 430 µm for D – E, G – H, 91 µm for F, 239 for I – J, and 266 µm for K – L.