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Euglenophyceae: Euglenales
Mastigophora: Euglenida

Phacus pleuronectes
(O.F. Müller) Dujardin 1841

Phacus pleuronectes Species: 45-100 μm long, 30-70 μm wide; short posterior prolongation slightly curved; a prominent ridge on the convex side; longitudinally striated; one ? circular paramylon (paramylum) body near center; flagellum as long as cell body (Kudo, 1966). Cell body nearly spherical at dorsal view; anterior end separated into two spherical projections; cauda strongly curved; dorsal ridge short or absent (cf. dorsal ridge present P. triqueter); cell body 40-80 μm long, 30-50 μm wide; two ? paramylon bodies disc-shaped; striae straight (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).
Similar species -- >> P. triqueter; P. curvicauda;


Phacus pleuronectes (O.F. Müller) Dujardin 1841, cell body 50 μm long, 44 μm wide, tail 20 μm long, with two large and small paramylons, x 400, Japan 199? by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Phacus Phacus Phacus Phacus
Phacus Phacus Phacus

Phacus undulatus ?
Phacus

Phacus pleuronectes Swirenko: Cell body 24-26 μm diam., (25)-38-30 μm long; 2 paramylons (Illustrations of The Japanese Fresh-water Algae, 1977).

Similar species:
Phacus obolus Phochmann: (Syn. Phacus caudatus Hubner var. lata Allorge & Lefevre) Cell body flat, broad ellipsoid, anterior slightly narrowed, posterior broadly rounded, with long straight cauda, 28-32 μm long without cauda, 20-24 μm wide, cauda 7-9 μm long, lateral sides nearly straight, periplasts longitudinally striated, two disc-shaped paramylon bodies, large and small (Photomicrographs of the freshwater algae, 14:45, 1995).


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