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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Tropidoatractus

Tropidoatractus Levander, 1894 (ref. ID; 2014)

Class Polyhymenophora: Subclass Spirotricha: Order Heterotrichida: Suborder Heterotrichina (ref. ID; 2014)

[ref. ID; 2014]
Transparent medium (45-90 um long), elongate metopid ciliate which is only slightly flattened dorso-ventrally. Body distinctly twisted and covered with a translucent longitudinal rib-like armour which follows the line of the body. The buccal cavity is restricted to the anterior region and the perizonal cilia are located on a distinct hoop-like structure. Somatic cilia in 7 to 8 longitudinal meridians. The cell's transparency means that it is easily overlooked. Sapropelic. The presence of rib-like armour clearly distinguishes this genus from other metopid ciliate genera.
Quote; Colin R. Curds, Michael A. Gates and David McL. Roberts "British and other freshwater ciliated protozoa Part II Ciliophora: Oligohymenophora and Polyhymenophora" Cambridge University Press, 1983 (ref. ID; 2014)
  1. Tropidoatractus acuminatus Levander, 1894 (ref. ID; 1621, 1629, 2245, 4610)
    Syn; Metopus cuspidatus Penard, 1922 (ref. ID; 4610)