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Chlorophyceae: Chlamydomonadales (Volvocales): Phacotaceae
Volvocida: Chlamydomonadina: Phacotidae

 Phacotus lenticularis
(Ehrenberg) F. Stein var. lenticularis 1878

Phacotus Genus: With two equal-length flagella, cell body within a test consisting of two cup-shaped parts; test surface hairly or granular; a single chloroplast cup-shaped, with a prenoid (Photomicrographs of the Freshwater Algae, 1998).
Species: (An illustrated guide to freshwater zooplankton in Japan, 2000).

Phacotus lenticularis ? (Phacotaceae, Volvocales, Chlorophyceae), test 18 μm long, 17 μm wide, cell body triangular in shape 8 μm long, 8.5 μm wide, stigma present, x 640, Heisei-no-mori Park, Kawajima (Kawashima) town, Saitama city, Saitama Pref., Japan, June 2002 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Phacotus Phacotus Phacotus

Phacotus lenticularis ? (Phacotaceae, Volvocales, Chlorophyceae), test 17 μm long, 16 μm wide, cell body spherical 7 μm in diam., x 640, Heisei-no-mori Park, Kawajima (Kawashima) town, Saitama city, Saitama Pref., Japan, June 2002 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Phacotus Phacotus

Phacotus lenticularis ? (Phacotaceae, Volvocales, Chlorophyceae), test 14 μm long, 14 μm wide, cell body spherical 5 μm in diam., x 640, Heisei-no-mori Park, Kawajima (Kawashima) town, Saitama city, Saitama Pref., Japan, June 2002 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Phacotus Phacotus Phacotus Phacotus Phacotus

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