Family (Kent): Elongate body with a long "neck"; solitary or colonial; within a gelatinous matrix; often with zoochlorellae (Kudo, 1966).
Genus: Cell body long, contractile; posterior end pointed or rounded; in gelatinous matrix (Kudo, 1966).

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O. sessile or O. crassicaule ? or O. vernale ? 270 μm Mac. constrict. Kuroiso Tochigi, 1999	O. sessile or O. crassicaule ? or O. vernale ? 171 μm Mac. constrict. Japan, 1998	O. sessile or O. crassicaule ? or O. vernale ? 213 μm Mac. band-form Japan, 1998	O. sessile or O. crassicaule ? or O. vernale ? 170 μm Hachiman-numa Hachimantai Iwate, 2007
O. sessile or O. crassicaule ? or O. vernale ? 170 μm Mida-ga-hara 6 Gassan Yamagata, 2006	O. sessile or O. crassicaule ? or O. vernale ? 180 μm Mida-ga-hara 10 Gassan Yamagata, 2006	O. sessile or O. crassicaule ? or O. vernale ? μm Kannon-numa 1 Shimogo Fukushima, 2008	O. sessile or O. crassicaule ? or O. vernale ? 165 x 15 μm Fujimitashiro Katashina Gunma, 2007
O. sessile or O. crassicaule ? or O. vernale ? 210 x 24 μm Tanohara marsh Shiga highland Nagano, 2004	O. sessile or O. crassicaule ? 160 x 15-26 μm Tanohara marsh Shiga highland Nagano, 2006	O. sessile or O. crassicaule ? or O. vernale ? 185 μm J Skunk Cabbage m Tsugaike highland Nagano, 2006	O. sessile or O. crassicaule ? or O. vernale ? 185 μm Mac. band-form Fuchu Tokyo, 2004
O. sessile or O. crassicaule ? or O. vernale ? μm Fujimitashiro Oze-ga-hara Gunma, 2008	Ophrydium sp. 175 x 30 μm Hakama marsh Madarao highland Niigata, 2005
O. versatile by Dirk Klos 200-300 x 20-40 μm little pond Bavaria Germany, 2004	O. versatile by Dirk Klos 200-300 x 20-40 μm little pond Bavaria Germany, 2004
Ophrydium sp. 120 x 15-23 μm Onnenai Kushiro marsh Hokkaido, 2005	O. versatile ? 105 x 20 μm Tashirodaira m. Hakkoda mountain Aomori, 2005	O. versatile 180 x 28 μm Mida-ga-hara Gassan (mt) Yamagata, 2006	O. versatile 195 x 19 μm Iroha-numa Zao mountain Yamagata, 2006
O. versatile μm Kannon-numa 5 Shimogo Fukushima, 2008	O. versatile μm Mitsuishi marsh Hachimantai Iwate, 2008	O. versatile μm Kashibaru m.4 Karatsu Saga, 2008
O. versatile 300 x 64 μm Shibu-ike Shiga highland Nagano, 2005	O. versatile 270 x 55 μm Shibu-ike Shiga highland Nagano, 2006	O. versatile 280 x 25 μm Tanohara m.1 Shiga highland Nagano, 2007	O. versatile 150 x 45 μm Ushidome-ike Norikura highland Nagano, 2005
O. versatile 160 x 20 μm Karakemi marsh Yasaka Nagano, Apr. 05	O. versatile 300 x 50 μm Karakemi marsh Yasaka Nagano, Nov. 05	O. versatile 180 x 16 μm Karakemi marsh Yasaka Nagano, 2007	Ophrydium sp. O. versatile ? 146 x 23 μm Shimo-no-koike Shiga highland Nagano, 2004
O. versatile 160 x 20 μm Imou bog Toyohashi Aichi, 2004	O. versatile 92-116 x 19-32 μm Imou bog Toyohashi Aichi, 2006.4	O. versatile 168 x 26 μm Imou bog 7 Toyohashi Aichi, 2006.9	O. versatile 180 x 20-25 μm Imou bog 3 Toyohashi Aichi, 2006.9
Ophrydium sp. O. versatile ? 200 x 22 μm Koigakubo marsh Tessei-cho Okayama, 2004

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