Entosiphon
Genus of euglenids
Entosiphon is a genus of euglenids. It was described by Friedrich Stein in 1878.
01Description
Entosiphon is a genus of phagotrophic euglenids, single-celled flagellates with two flagella characterized by a protein pellicle present beneath the cell membrane. In particular, Entosiphon cells are distinguished by a protrusible ingestion apparatus. Their pellicle is composed of twelve protein strips.
02Classification
The genus Entosiphon was described by Friedrich Stein in 1878. It was established to transfer a species of Anisonema, A. sulcata, to a separate genus, which changed the original spelling of this species to E. sulcatum. A second species, E. oblongum, was described in 2016.
The evolutionary position of Entosiphon among euglenids is unstable, either branching with Hemiolia and Liburna or forming a separate branch, depending on the methods and datasets used. In all cases, it consistently branches among basal, non-flexible euglenids, outside of any major euglenid group.
Sources and credits
This article is adapted from the Wikipedia article “Entosiphon”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Entosiphon oblongum 2016 fig1Q.png by Thomas Cavalier-Smith, Ema E. Chao, Keith Vickerman, CC BY 4.0
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