OSTRACOD RESEARCH

at the Lake Biwa Museum, Japan


Robin James Smith

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Genus Cryptocandona Kaufmann, 1900

Superfamily: Cypridoidea Baird, 1845
Family: Candonidae Kaufmann, 1900
Subfamily: Candoninae Kaufmann, 1900

Three species have been reported from Korea:

1. Cryptocandona brehmi (Klie, 1934)


Right side view of a female Cryptocandona brehmi, length 0.85mm.



External view of a female left valve of Cryptocandona brehmi, length 883 microns.


Additional figures in: Namiotko, & Danielopol 2002 (carapace and appendages), Smith 2011 (carapace and antennule), Chang et al. 2012 (carapace).
Habitat: Korean specimens from a small seep. Elsewhere known from a cave (Klie 1934), and a spring-fed pond (Smith 2011).
Mode of life: Benthic.
Reproductive mode: Asexual. Males unknown.
Known distribution: Uljin-gun, North Gyeongsang Province (Chang et al. 2012). Elsewhere, known from Japan (Klie 1934; Smith 2011).

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.

Namiotko, T. and Danielopol, D. L. 2002. Morphology and phylogenetic affinities of Cryptocandona brehmi (Klie, 1934) (Ostracoda, Podocopida). Crustaceana, 74, 1349-1363.

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.


2. Cryptocandona smithi Karanovic & Lee, 2012

Figures in: Karanovic & Lee, 2013 (carapace and appendages).
Habitat: Small, fast flowing stream with substrate of gravel and fallen leaves.
Mode of life: Benthic.
Reproductive mode: Probably asexual. Males unknown.
Known distribution: Only known from the type locality in Yeongwol, Gangwon Province.

References:
Karanovic I., & Lee, W. 2012. Two new candonid species from South Korea (Ostracoda, Podocopida). Crustaceana, 85, 1633-1656.


3. Cryptocandona tsukagoshii Smith 2011


External view of a female left valve of Cryptocandona tsukagoshii, length 708 microns.


Additional figures in: Smith 2011 (carapace and appendages), Chang et al. 2012 (carapace).
Habitat: River gravels (Smith 2011) and springs (Chang et al. 2012).
Mode of life: Interstitial.
Reproductive mode: Probably asexual. Males unknown.
Known distribution: Angang-up, Gyeongju-si, North Gyeongsang Province (Chang et al. 2012). Elsewhere known from Japan (Smith 2011).


Photograph of the type locality: a tributary of the Yasu River, Tsuchiyama-cho, Koka, Shiga Prefecture, Japan, N35º 00’ 18.1", E136º 22’ 26.7", altitude 608 m (29 January 2010).

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.

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.