Family: Scales cylindroid, thick, adjacent or overlapped, test usually with aperture bent to one side.
Genus:

Google Image Search

C. dubium 50 x 28 μm Shimizu-daira Nasu Tochigi, 2005	C. dubium 59 x 34 μm Hakama marsh Madarao highland Niigata, 2005	C. dubium 54 x 35 μm Sukawa highland Kurikoma mountain Akita, 2007	C. dubium or C. pulchellum ? 37 x 29 μm Hakama marsh Madarao highland Niigata, 2005
C. pulchellum 43 x 31 μm Hakama marsh Madarao highland Niigata, 2005	C. pulchellum 35 x μm Watasuge marsh Tsugaike highland Nagano, 2005	C. pulchellum μm Iroha-numa 4 Zao mountain Yamagata, 2008	C. pulchellum μm Kareki-numa Nikko Tochigi, 2008
Corythion sp. ? 80 x 45 μm Omine-numa 6 Minakami Gunma, 2007

Similar genera -->> Trinema;

Please click on images for viewing enlarged.

Copyright Protist Information Server