Genus: Outer envelop made of two kinds of siliceous element; tangential scales or pearls and radial spicules (Illustrated Guide, 1985).

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Rabdiophrys or Nuclearia ? 50 μm Japan, 1997	Rabdiophrys or Nuclearia ? 22 μm Japan, 1997	Rabdiophrys or Nuclearia ? 67 μm Japan, 1997	Rabdiophrys or Nuclearia ? 16 μm Japan, 1998
Rabdiophrys or Nuclearia ? 25 μm Ara river Kumagaya Saitama, 2004	Rabdiophrys or Nuclearia ? 30 μm Iruma river Sayama Saitama, 2004	Rabdiophrys or Nuclearia ? 23 μm Numa-no-hara m. Madarao highland Niigata, 2005	Rabdiophrys or Nuclearia ? 19 μm Tokachi river Obihiro Hokkaido, 2005
Rabdiophrys or Nuclearia ? 27 μm Aizu Recreation p. Aizuwakamatsu Fukushima, 2005	Rabdiophrys or Nuclearia ? 24 μm Asa-kawa Hachioji Tokyo, 2005

Similar genus ->> Nuclearia;

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