Cypris vidua, 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

Cypridopsis vidua ( O. F. Müller, 1776)

( Fig. 2 K & L)

1776 Cypris vidua n. sp. — O.F. Müller: 199.

1821 Cypris pincta n. sp. —Straus: 59, figs 17–19.

1869 Cypridopsis obesa n. sp. —Brady & Robertson, 364, pl. 18: 5–7. 1900 Cypridopsis helvetica n. sp. —Kaufmann: 310, pls 19: 4–5; 22: 10–11. 1900 Cypridopsella tumida n. sp. —Kaufmann: 313, pls 19: 10–13; 22: 15–19. 1900 Cypridopsis parva n. sp. —Müller: 81, pl. 18: 1–2, 11–12.

1943 Cypridopsis mariae n. sp. —Rome: 6.

1977 Cypridopsis parvoides n. sp. —J.M. Martens: 87, figs 1–8, pls 1: 1–6; 2: 1–6. nomen nudum 2004 Cypridopsis biwaensis n. sp. —Okubo: 38, figs 20 ad–af.

Material examined. Four females from the lower reaches of the Hyeongsan River, Yangdong, Gyeongju (35°59′16″N, 129°15′21″E) (locality 8 on Fig. 1 ), 10 October 2010. Ten females from discharge water from a water filtration plant at Yecheon-eup, Yecheon-gun, Gyeongbuk-do (36˚39´59.91ʺN, 128˚27´36.56Eʺ) (locality 4 on Fig. 1 ), 25 August 2008. Fifty-two females from a rain-fed rockpool with a leaf litter substrate above a stream in Deokgu Valley at Deokgu-ri, Buk-myeon, Uljin-gun, Gyeongsangbuk-do (37º04′46.9″N, 129º16′25.6″E) (locality 2 on Fig. 1 ), depth 15 cm, 6 June 2011.

Remarks. This cosmopolitan species is a new record for Korea. It is a very variable species, both in carapace morphology and ecology (see Meisch 2000 for a review). The Korean specimens closely resemble European specimens figured by Meisch (2000, figs 155A and E), although in dorsal view the Korean specimens are very slightly narrower. The surface ornamentation of the Korean specimens is subdued, with only faint pits in the central area, but this fits in with the variation of ornamentation reported for this species ( Meisch 2000). The appendages are also very similar to those reported from Europe and North America ( Meisch 2000; Kesling 1951), with the exception that the long seta on the antennal exopodite is longer in the Korean specimens, reaching to approximately the distal end of the second endopodal segment (usually reaching to the distal end of the first endopodal segment).

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.