Genus Siamopsis Savatenalinton, 2017

Superfamily: Cypridoidea Baird, 1845
Family: Cyprididae Baird, 1845
Subfamily: Cypricercinae McKenzie, 1971

One species has been reported from Japan :

1. Siamopsis sudzukii (Okubo, 1992)

Additional figures in: Okubo & Terauchi 1992; Okubo 2004 (N.B. one specimen, 783, figured in Okubo 2004 is listed as a juvenile in Okubo & Terauchi 1992), Smith 2023; Smith et al. 2024.

Habitat: Ponds and rice fields (Okubo 2004). This species has also been found as a contaminant in a container stocked with water lilies (Smith et al. 2024).

Mode of life: Nektobenthic (swimmer).

Reproductive mode: Asexual.

Known distribution: Okinawa (Okubo & Terauchi 1992), Kanagawa Prefecture, probably not native (Smith et al. 2024).

References:

⚬ Okubo, I. 2004. Nihon tansui san kaimijinko rui ni tsuite. Kabushikigaisha Sanmon Insatsusho, Okayama, Japan, 72pp. [In Japanese, privately published].

⚬ Okubo, I. & Terauchi, M. 1992. Freshwater Ostracoda from the Southwestern Islands of Japan. Proceedings of the Japanese Society for Systematic Zoology, 46, 101-108.

⚬ Smith, R. J. 2023. Descriptions of two Cypridopsinae (Ostracoda, Crustacea) species from the Nansei Islands, Japan, with the first records of non-marine ostracods from the Daito Islands. Zootaxa, 5293 (2), 294–316.

⚬ Smith, R. J., Ozawa, H., Nishida, S. & Nakai, S. 2024. Non-marine Ostracoda (Crustacea) collected from pet shops and a hobbyist's aquaria in Japan, including two new species. Zootaxa 5410 (4), 451–494.

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