Genus Pseudostrandesia Savatenalinton and Martens, 2009
Superfamily: Cypridoidea Baird, 1845
Family: Cyprididae Baird, 1845
Subfamily: Cypricercinae McKenzie, 1971
Two species have been reported from Japan :
1. Pseudostrandesia tecta Smith & Ozawa, 2024 
?
Left side view of Pseudostrandesia tecta, length 0.63 mm.
External view of a female right valve of Pseudostrandesia tecta, length 620 microns.
- Additional figures in: Smith et al. 2024.
- Habitat: Aquaria in pet shops.
- Mode of life: Nektobenthic (swimmer).
- Reproductive mode: Sexual.
- Known distribution: Iwate Prefecture (Smith et al. 2024).
- Remarks: This species is currently only known as a contaminant in the aquaria of pet shops in Japan. However, it is probably an alien species accidentally imported with plants or fish. Its origin is unknown, but possibly South East Asia.
- References:
- ⚬ 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.
2. Pseudostrandesia tenebrarum Smith & Ozawa, 2021 ?
Left side view of Pseudostrandesia tenebrarum , length 0.72 mm.
External view of a female right valve of Pseudostrandesia tenebrarum, length 710 microns.
- Additional figures in: Smith et al. 2021.
- Habitat: Aquaria in pet shops.
- Mode of life: Nektobenthic (swimmer).
- Reproductive mode: Sexual.
- Known distribution: Kanagawa Prefecture (Smith et al. 2021).
- Remarks: This species is currently only known as a contaminant in the aquaria of pet shops in Japan. However, it is probably an alien species accidentally imported with plants or fish. Its origin is unknown, but possibly South East Asia.
- References:
- ⚬ Smith, R. J., Ozawa, H., Kawashima, K. & Nakai, S. 2021. A New Species of Pseudostrandesia Savatenalinton and Martens, 2009 (Ostracoda, Crustacea) Collected from Two Pet Shops in Central Japan: an Alien Species? Zoological Science, 38, 481-493.