OSTRACOD RESEARCH

at the Lake Biwa Museum, Japan


Robin James Smith

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Genus Stenocypris Sars, 1889

Superfamily: Cypridoidea Baird, 1845
Family: Cyprididae Baird, 1845
Subfamily: Herpetocypridinae Kaufmann, 1900

Two species have been reported from Korea:

1. Stenocypris hirutai Smith & Kamiya, 2006

2006 Stenocypris hirutai n. sp. - Smith & Kamiya: 337, 338, Figs 2f-i, 6, 7, appendix.


Left side view of a female Stenocypris hirutai, length about 1.3 mm.



External view of a female left valve of Stenocypris hirutai, length 1419 microns.



External view of a female right valve of Stenocypris hirutai, length 1395 microns.


Additional figures in: Smith & Kamiya 2006 (carapace and appendages), Smith 2011 (carapace), Smith et al. 2014 (carapace).
Habitat: Springs (Smith & Kamiya 2006; Smith et al. 2014) and river gravels (Smith 2011).
Mode of life: Benthic, interstitial.
Reproduction mode: Asexual, males unknown.
Known distribution: Jeju Island (Smith et al. 2014). Elsewhere, Japan (Smith & Kamiya 2006; Smith 2011; Tanaka et al. 2015)

References:
Smith, R. J. 2011. Groundwater, spring and interstitial Ostracoda (Crustacea) from Shiga Prefecture, Japan, including descriptions of three new species and one new genus. Zootaxa, 3140, 15-37.

Smith, R. J. & Kamiya, T. 2006. Six new species of fresh and brackish water ostracods (Crustacea) from Yakushima, Southern Japan. Hydrobiologia, 559, 331 - 355.

Smith, R. J., Lee, J., & Chang, C. Y. 2014. Nonmarine Ostracoda (Crustacea) from Jeju Island, South Korea, including descriptions of two new species. Journal of Natural History.

Tanaka, H., Kotorii, H., Yokozawa, K., Wakabayashi, F., Kimoto, K. & Sano, K. 2015. Distribution and occurrence of freshwater Ostracoda (Crustacea) from southwest region of Mt. Fuji. TAXA, Proceedings of the Japanese Society of Systematic Zoology, 38, 26-41. [In Japanese with English abstract.]


2. Stenocypris hislopi Ferguson, 1969

1969 Stenocypris hislopi n. sp. - Ferguson: p. 68, fig. 1, 2-6.
2011 Chrissia hislopi (Ferguson, 1969) - Martens & Savatenalinton, 26.


Left side view of a female Stenocypris hislopi, length about 1.7 mm.



External view of a female left valve of Stenocypris hislopi, length 1492 microns.



External view of a female right valve of Stenocypris hislopi, length 1460 microns.


Additional figures in: Ferguson 1969 (carapace, antenna, seventh limb, caudal rami); Okubo 2004 (carapace); Smith et al. 2011 (carapace).
Habitat: Streams, rice fields, ponds, pools and lakes (Chang et al. 2012).
Mode of life: Nektobenthic.
Reproduction mode: Asexual, males unknown.
Known distribution: South Jeolla, South Gyeongsang Province (Kim & Min 1991), North Gyeongsang Province (Kim & Min 1991; Chang et al. 2012). Elsewhere, known from Japan (Okubo & Ida 1989; Okubo 1990; Smith et al. 2011), India (Victor & Fernando 1979), and Sri Lanka (Neale 1984).

References:
Chang, C. Y., Lee, J. & Smith, R. J. 2012. Nonmarine ostracods (Crustacea) from South Korea, including a description of a new species of Tanycypris Triebel (Cyprididae, Cypricercinae). Zootaxa, 3161, 1-19.

Ferguson, E. 1969. The type species of the genus Stenocypris Sars, 1889 with descriptions of two new species. In: Neal, J.W. (Ed.), The Taxonomy, Morphology and Ecology of Recent Ostracoda. Oliver and Boyd Ltd. Edinburgh, pp. 67-75.

Neale, J. W. 1984. The freshwater Ostracoda. Ecology and Biogeography in Sri Lanka. Monographie Biologicae, 57, 171-194.

Okubo, I. 1990. Sixteen species of freshwater ostracoda from Japan. Bulletin of the Biogeographical Society of Japan, 45, 39-50.

Okubo, I. & Ida, K. 1989. Freshwater Ostracoda from Gunma Prefecture, Japan (In Japanese). Bulletin of the Biogeographical Society of Japan, 44, 105-107.

Smith, R. J., Janz, H. & Okubo, I. 2011. Recent Cyprididae and Ilyocyprididae (Crustacea: Ostracoda) from Lake Biwa, Japan, including a summary of the lake's ostracod fauna. Zootaxa, 2874, 1 - 37.