Physocypria nipponica Okubo, 1990

Smith, Robin J. & Janz, Horst, 2008, Recent species of the Family Candonidae (Ostracoda, Crustacea) from the ancient Lake Biwa, Central Japan, Journal of Natural History 42 (45 - 46), pp. 2865-2922 : 2916

publication ID	https://doi.org/ 10.1080/00222930802361030
persistent identifier	https://treatment.plazi.org/id/6530807D-EC1E-FF92-AF8C-FC93FD85FAAE
treatment provided by	Carolina
scientific name	Physocypria nipponica Okubo, 1990
status

Treatment

( Figures 26 View Figure 26 H–J and 32A–C)

Remarks

Physocypria nipponica is very similar to Physocypria kraepelini G. W. Müller, 1903 , the latter of which is widely distributed in Europe and Asia. Compared with Ph. kraepelini , Ph. nipponica has a stouter and thicker a lobe, proportionally shorter b lobe and more rounded outer edge of the Hp (the latter of which is quite angular in Ph. kraepelini ), and slightly differently shaped male L5 palps. However, these differences are relatively minor, and the morphology of the male L 5 in particular is noted to show considerable variation in Ph. kraepelini ( Meisch, 2000) . It is therefore possible that Ph. nipponica is a junior synonym of Ph. kraepelini , but further investigation is required to confirm this.

This species is widespread in Japan, typically found in rice fields ( Okubo 1990). In Lake Biwa it was found at 22 sites, mostly in the southern basin. Localities 35, 36, 69, 75–84, 86, 88 and 91–97 in Figure 1 View Figure 1 .