Ostracod Research at the Lake Biwa Museum, Japan

Robin James Smith

Genus Fabaeformiscandona Krstic, 1972

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

Two species have been reported from Korea:

1. Fabaeformiscandona koreana Karanovic & Lee, 2012

Figures in: Karanovic & Lee, 2012.
Habitat: Swamp.
Mode of life: Benthic.
Reproduction mode: Unknown. Only one adult female specimen reported.
Known distribution: Currently only known from the type locality, Jilmoeneup, a small fen in Odaesan National Park, Gangwon Province.
References:
⚬ Karanovic I., & Lee, W. 2012. A review of candonid ostracods (Crustacea: Ostracoda: Podocopida) from East Asia, with descriptions of five new species from South Korea. Zootaxa, 3368, 7-49.

2. Fabaeformiscandona subacuta (Yang, 1982)

Left side view of a male Fabaeformiscandona subacuta, length about 1 mm.

Left side view of a female Fabaeformiscandona subacuta, length about 1 mm.

External view of a male left valve of Fabaeformiscandona subacuta, length 1073 microns.

External view of a female left valve of Fabaeformiscandona subacuta, length 980 microns.

The male sexual organ of Fabaeformiscandona subacuta, length 420 microns.

Additional figures in: Smith & Kamiya, 2007 (as Fabaeformiscandona japonica) ; Smith & Janz, 2008 (as Fabaeformiscandona japonica); Chang et al., 2012 (as Fabaeformiscandona japonica); Escrivá et al., 2012.
Habitat: Lakes, ponds, spring runoff, irrigation canals, rice fields.
Mode of life: Benthic
Reproduction mode: Sexual.
Known distribution: Japan, China, Korea, Thailand, Russia, Spain, Australia, New Zealand, Columbia. This species is considered invasive in Spain (Escrivá et al., 2012).
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.
⚬ Escrivá, A., Smith, R. J., Aguilar-Alberola, J. A., Kamiya, T., Karanovic, I., Rueda, J., Schornikov, E. I. and Mesquita-Joanes, F. 2012. Global distribution of Fabaeformiscandona subacuta: An exotic invasive Ostracoda on the Iberian Peninsula? Journal of Crustacean Biology, 32, 949-961.
⚬ Smith, R. J. & Janz, H. 2008. Recent species of the Family Candonidae (Ostracoda, Crustacea) from the ancient Lake Biwa, Central Japan. Journal of Natural History, 42, 2865 - 2922.
⚬ Smith, R. J. & Kamiya, T. 2007. Copulatory behaviour and sexual morphology of three Fabaeformiscandona Krstic, 1972 (Candoninae, Ostracoda, Crustacea) species from Japan, including descriptions of two new species. Hydrobiologia, 585, 225 - 248.