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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Pseudocarchesium

Pseudocarchesium Sommer, 1951 (ref. ID; 1248 original paper, 2014)

Class Oligohymenophora: Subclass Peritricha: Order Peritrichida: Suborder Sessilina (ref. ID; 2014)
Family Zoothamniidae (ref. ID; 1248)

[ref. ID; 2014]
Colonial. Inverted bell-shaped zooids mounted upon contractile branched stalks which contract in a zigzag fashion, not spirally. The myoneme in the stalk is discontinuous so that the side branches may contract independently of one another. Could be confused with the genus Carchesium in which the stalk contracts spirally.
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. Pseudocarchesium aselli (Engelmann) (ref. ID; 1248)
    Syn; Carchesium aselli (ref. ID; 1248)
  2. Pseudocarchesium erlangensis Nenninger, 1948 (ref. ID; 1114, 1248) reported year? (ref. ID; 3698)
    Syn; Carchesium ephemera Soramek-Husek, 1948 (ref. ID; 1114); Carchesium erlangensis Nenninger, 1948 (ref. ID; 1114) reported author and year? (ref. ID; 1248)
  3. Pseudocarchesium gammari (Precht, 1935) (ref. ID; 1248)
    Syn; Carchesium gammari (ref. ID; 1248)
  4. Pseudocarchesium inconjunctum (Korfsmeier, 1948) (ref. ID; 1248)
    Syn; Carchesium inconjunctum (ref. ID; 1248)
  5. Pseudocarchesium ovatum Sommer, 1951 (ref. ID; 1248 original paper)
  6. Pseudocarchesium steini (Precht, 1935) (ref. ID; 1248)
    Syn; Carchesium steini (ref. ID; 1248)