Ref ID : 4226
Richard E. Triemer; Light and Electron Microscopic Description of a Colorless Euglenoid, Serpenomonas costata n. g., n. sp. J.Protozool. 33(3):412-415, 1986
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A new genus of rigid, colorless, phagotrophic euglenoid is described from a standing pond on a salt marsh. The cell body measures 21-25 µm long, is about 18 µm wide, has a slight dorso-ventral flattening, and is marked by distinct pellicular ridges. The organism, described as Serpenomonas costata, has two unequal, antapically inserted, heterodynamic flagella. The shorter flagellum is anteriorly directed during swimming and the longer one trails posteriorly. Cells move along the substrate with a creeping motion. The ingestion apparatus is composed of separate ribs extending the length of the cell and is incorporated into the ventral pellicular ridge. The apparatus independent of the canal and reservoir and is not protrusible. The taxonomic affinities of Serpenomonas with other euglenoids are discussed.