Cypris pigra, 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 : 10

Eucypris pigra ( Fischer, 1851)

( Fig 5 E–H)

1851 Cypris pigra n. sp. —Fischer: 158, pl. 9: 11–16.

1870 Cypris tumefacta n. sp. —Brady & Robertson: 13, pl. 4: 4– 6. nov. comb. 1912 Eucypris pigra ( Fischer, 1851) —G. W. Müller: 173.

Material examined. Three females 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. Sixteen females from small seeps and springs along the edges of a footpath in Deokgu Valley at Deokgu-ri, Buk-myeon, Uljin-gun, Gyeongsangbuk-do (37º04′33.3″N, 129º15′27.6″E) (locality 2 on Fig. 1 ), 6 June 2011. One-hundred and sixty-five females from the discharges of small springs flowing from limestone outcrops along the banks of a shallow, fast flowing stream at Oksan-ri, Angang-up, Gyeongju-si, Gyeongsangbuk-do (36º01′0 1.7″N, 129º09′35.7″E) (locality 9 on Fig. 1 ), 7 June 2011.

Remarks. Eucypris pigra is a widespread species in the Palaearctic, previously recorded from Europe, central Asia, Russia and Japan ( Meisch 2000; Bronshtein 1988; Okubo 2004; Smith 2011). This is the first report of this species from Korea. The Korean specimens were associated with groundwater runoff of springs and seeps, a typical habitat for this species, but in other places it has also been collected from slowly flowing streams, shallow grassy ditches, interstitial habitats, and rarely from ponds and lakes ( Meisch 2000).

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.