• Euglena sima: Wermel (1924)
• Euglena satelles: Braslavska-Spectorova (1937)
• Euglena mesnili : Deflandre, Dusi (1935)
• Euglena klebsii : Lemmermann, Mainx (1927)
• Euglena intermedia var. Klebsii: Lemmermann (1910)
• Euglena intermedia var. brevis: Fritsch F.E., M.F.Rich (1930)
• Euglena intermedia var. acidophila: Z.X.Shi (1989)
• Euglena intermedia f. major: Popova (1955)
• Euglena intermedia : Klebs, F.R.F.Schmitz (1884)
• Euglena deses var. tenuis: Lemmermann (1910)
• Euglena deses var. minuta: Playfair (1921)
• Euglena deses var. intermedia: Klebs (1883)
• Euglena deses var. gracilis: Playfair (1921)
• Euglena deses var. digrana: B.Zakrys (1986)
• Euglena deses f. mesnili: Dusi , Deflandre, E.G.Pringsheim (1963)
• Euglena deses f. major: Popova (1966)
• Euglena deses f. klebsii : Lemmermann, Popova (1966)

Cells green, elongate cylindrical to ellipsoidal, could be slightly flattened, anterior end rounded or slightly truncate and posterior end narrowed to a blunt point. Pellicle delicately striated. Paramylon bodies rod-shaped. Chloroplasts parietal and numerous, lens-shaped, each with a pyrenoid.

Cosmopolitan, widespread

Distribution:

as Euglena deses Ehrenberg

Europe: Black Sea (BSPC Editorial Board 2014), Britain (Wolowski 2002, Whitton et al. 2003), Germany (Scholz & Liebezeit 2012 , Täuscher 2013), Romania (Caraus 2002, Caraus 2012), Spain (Alvárez Cobelas 1984, Aboal 1990). North America: Oregon (Kingston & Gough 2009). South America: Brazil (Alves-da-Silva & Menezes 2010). South-west Asia: Israel (Stupina et al. 2000). Asia: Taiwan (Anon. 2012). Australia and New Zealand: New South Wales (Day et al. 1995), Queensland (Day et al. 1995), Victoria (Day et al. 1995).

as Euglena deses var. intermedia G.A.Klebs

South America: Brazil (Alves-da-Silva & Menezes 2010).

as Euglena intermedia (Klebs) F.R.F.Schmitz

Caribbean Islands: Cuba (Comas González 2008). South-west Asia: Israel (Stupina et al. 2000).

as Euglena deses var. tenuis Lemmermann

Europe: Romania (Caraus 2002).

as Euglena deses var. gracilis Playfair

Australia and New Zealand: New South Wales (Day et al. 1995).

as Euglena deses var. minuta Playfair

Australia and New Zealand: New South Wales (Day et al. 1995).

as Euglena klebsii (Lemmermann) Mainx

Europe: Baltic Sea (Hällfors 2004), Romania (Caraus 2002, Caraus 2012).

as Euglena satelles Braslavska-Spectorova

Europe: Turkey (Europe) (Ersanli & Gönülol 2006). South-west Asia: Turkey (Asia) (Soylu & Gönülol 2005).

as Euglena deses f. klebsii (Lemmermann) T.G.Popova

Europe: Britain (Wolowski 2002, Whitton et al. 2003), Romania (Caraus 2002).

as Euglena deses f. major T.G.Popowa

South-west Asia: Turkey (Asia) (Soylu & Gönülol 2005).

Atlas of Euglenophytes, VEDA, Publishing House of the Slovak Academy of Sciences, Konrad Wolowski, František Hindák, 2005, 136 pp.

Checklist of Baltic Sea Phytoplankton Species. Baltic Sea Environment Proceedings No. 95, Helsinki Commission Baltic Marine Environment Protection Commission, Hällfors G., 2004,

Biovolumes and size-classes of phytoplankton in the Baltic Sea, HELCOM Balt.Sea Environ. Proc. No. 106, Olenina I., Hajdu S., Edler L., Andersson A., Wasmund N., Busch S., Göbel J., Gromisz S., Huseby S., Huttunen M., Jaanus A., Kokkonen P., Ledaine I. and Niemkiewicz E., 2006, 1-144