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Euglenophyceae: Sphenomonadales: Petalomonadaceae
Euglenida: Sphenomonadida

 Petalomonas sp.
Stein

Petalomonas Genus: Only 1 emergent flagellum; locomotory flagellum directed anteriorly, straight, during swimming; colourless, phagotrophic; no eyespot; rigid, solitary, ovoid, usually flat, with several keels; freshwater (Illustrated Guide, 1985). Oval or pyriform; not plastic; pellicle often with straight or spiral furrow; a single flagellum; many species (Kudo, 1966).
Species:
Similar genus -->> Notosolenus;

Petalomonas sp., cell body 29 μm long, 20 μm wide, L/W=1.5, x 640, Kamonoyachi-numa (pond), Zao onsen (hot spring), Yamagata city, Yamagata Pref., Japan, July 9, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Petalomonas Petalomonas
Cell body 30 μm long, 20 μm wide, L/W=1.5, anterior flagellum 45 μm long, x 640
Petalomonas Petalomonas Petalomonas Petalomonas Petalomonas Petalomonas

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