Genus: Body form barrel-shaped; with regularly arranged ectoplasmic plates; cytostome at anterior end, surrounded by slightly longer cilia; often spinous projection at or near posterior end; one or more long caudal cilia (Kudo, 1966).

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Cell body more than 60 μm long,
C. elongatus ? spines short 91 μm, 16 x 14 ? Japan, 1997	C. elongatus ? spines long 80 μm, 16 x 14 ? ? rows Japan, 199?	C. elongatus ? dividing cell ? 65 x 18 μm Onnenai Kushiro marsh Hokkaido, 2004
Cell body less than 60 μm long, plate rows more than 12
C. hirtus or C. octospinus ? 57 x 18 μm Kannon-numa Shimogo Fukushima, 2005	C. hirtus or C. octospinus ? 56 x 28 μm Kannon-numa Shimogo Fukushima, 2006	C. hirtus ? or C. octospinus ? 55 x 23 μm Lake Shirakaba Tateshina & Chino Nagano, 2005	C. hirtus ? or C. octospinus ? 58 μm Omine-numa Tsukiyono Gunma, 2003
C. hirtus ? 60 x 25 μm Ohnuma Nasu-shiobara Tochigi, 2007	C. hirtus ? 60 x 26 μm Shimo-no-koike Shiga highland Nagano, 2007
Cell body less than 60 μm long, No. of platelet rows less than 12
C. hirtus ? or C. incurvus ? 61 μm Daidarabotchi-ike Iizuna-kogen Nagano, 2003	C. hirtus 44 x 23 μm rows Japan, 199?	C. hirtus 50 μm 12 rows Japan, 199?	C. hirtus 45 x 21 μm Nagaike park Hachioji Tokyo, 2005
Feeding on Diatoma Japan, 1997	Ingesting Chrologonium 36 μm Saitama, 1999	C. hirtus 45 x 20 μm Oura central p. Oura Gunma, 2006	C. hirtus ? 48 μm Japan, 199?
feeding cell μm Japan, 1998	C. hirtus cell μm Japan, 1999	C. hirtus cell μm Japan, 1999	Coleps sp. a dividing cell 10 rows Japan, 2000
No. of posterior spines 2
C. bicuspis ? 39 x 21 μm Kiyose Tokyo, 2001	C. bicuspis ? 50 x 30 μm rows Kiyose Tokyo, 2003	C. bicuspis 45 x 25 μm rows USA, 1999	C. bicuspis 43 x 22 μm rows Yamato Kanagawa, 2003
C. bicuspis ? 48 x μm 41 x μm Akasaka-numa Saitama, 2002	C. bicuspis ? 42 x 20 μm Iruma river Kawagoe Saitama, 2004	C. bicuspis ? 40 x 21 μm Kodama town Saitama, 2003	C. bicuspis ? 34 x μm Showa-machi g.p. Showa Saitama, 2003
C. bicuspis 1 or no spines μm Tochigo, 2001
Cell body less than 60 μm long; No. of platelet rows less than 12
C. hirtus ? 58 x 29 μm rows Kasai Seaside p. Tokyo, 2001	C. hirtus ? or C. incurvus ? 55 x 28 μm Mitsumata-numa Kawagoe etc. Saitama, 2005	C. hirtus ? 58 x 24 μm Sakitama-kofun p. Gyoda Saitama, 2004	C. inermis or C. striatus ? 55 x 30 μm A. flower p. Ashikaga Tochigi, 2006
C. hirtus ? 47 x 19 μm Mizuko-kaizuka p. Fujimi Saitama, 2004	Coleps sp. 38 x 20 μm Imou bog Toyohashi Aichi, 2004	Coleps sp. 40 x 23 μm riverside park Abukuma river Fukushima, 2005
Cell body less than 60 μm long; No. of platelet rows less than 12; Spines absent
C. inermis or C. striatus ? 50 x 31 μm Okubo Ryoke Akigase park Saitama, 2005	C. inermis ? or C. striatus ? no spines < 50 μm Japan, 1997	C. inermis ? or C. striatus ? no spines 43 x 24 μm Asakura Kochi, 2002	C. inermis ? or C. striatus ? 40 x 26 μm Tane-ike Shinano Nagano, 2006
Coleps sp. cell μm Japan, 1999	C. inermis ? or C. striatus ? 1 or no spines 57 x 30 μm USA, 1999
Cell body with additional ornaments
C. heteroacanthus 100 μm USA, 1999	C. heteroacanthus 100-111 μm Onnenai Kushiro marsh Hokkaido, 2004	C. heteroacanthus 110 x 60 μm Oyomi marsh Hakuba Nagano, 2006	C. heteroacanthus μm Karakemi marsh Omachi Nagano, 2008
C. spetai by Dirk Klos 70 x 32 μm Alpsee near Füssen August 2004	C. spetai 56 μm, 12 x 15 lateral ornaments USA, 1999 Movies	C. spetai 40 x 20 μm lateral ornaments Abiko Chiba, 2000

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