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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Pyxicola

Pyxicola Kent, 1881 (ref. ID; 1248) or 1882 (ref. ID; 2014)

Class Oligohymenophora: Subclass Peritricha: Order Peritrichida: Suborder Sessilina (ref. ID; 2014)
Family Vaginicolidae Kent, 1881 (ref. ID; 1248)

Synonym; Caulicola Stokes, 1894 (ref. ID; 2014); Pachytrocha Kent, 1882 (ref. ID; 2014)

[ref. ID; 2014]
Elongate, trumpet-shaped body contained within an erect pseudochitinous lorica and mounted upon a stalk. While the lorica itself is without valves etc., the body bears a discoid operculum beneath the peristome border which seals the aperture when the animal contracts. Strong contraction results in the animal retreating deep into the lorica and the operculum then only covers the peristome region. Trueba reported that the operculum may be lost leaving a fleshy pad.
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. Pyxicola affinis Kent (ref. ID; 1618)
  2. Pyxicola annulata Leidy (ref. ID; 5462)
  3. Pyxicola carteri Kent, 1881 (ref. ID; 1248, 7653) or 1882 (ref. ID; 4610) reported year? (ref. ID; 1629)
    Syn; Pyxicola constricta Stokes, 1884 (ref. ID; 4610); Pyxicola nolandi Finley & Bacon, 1965 (ref. ID; 4610)
  4. Pyxicola carteri f. constricta Sommer, 1951 (ref. ID; 1248, 1557)
    Syn; Pyxicola constricta Stokes (ref. ID; 1248); Pyxicola nolandi Finley & Bacon, 1965 (ref. ID; 1557)
  5. Pyxicola constricta Stokes, 1884 (ref. ID; 1620)
    See; Pyxicola carteri (ref. ID; 4610); Pyxicola carteri f. constricta (ref. ID; 1248)
    Syn; Cothurnia carteri Kent, 1881(?) (ref. ID; 1620)
  6. Pyxicola ligiae (ref. ID; 3689)
  7. Pyxicola nolandi Finley & Bacon, 1965 (ref. ID; 1557, 4610) reported author and year? (ref. ID; 191)
    See; Pyxicola carteri (ref. ID; 4610), Pyxicola carteri f. constricta (ref. ID; 1557)
  8. Pyxicola socialis (Gruber) (ref. ID; 1618)
  1. Caulicola pyxidiformis D'Udekem, 1862 (ref. ID; 1620)
  2. Caulicola valvata Stokes, 1894 (ref. ID; 1335, 1620) reported year? (ref. ID; 1618)
  1. Pachytrocha cothurnoides Kent, 1881 (ref. ID; 1620)

Pyxicola affinis Kent (ref. ID; 1618)

Descriptions

In marsh water. (ref. ID; 1618)

Measurements

Lorica about 85 um long. (ref. ID; 1618)

Pyxicola socialis (Gruber) (ref. ID; 1618)

Descriptions

Often in groups; salt water. (ref. ID; 1618)

Measurements

Lorica about 100 um long. (ref. ID; 1618)

Caulicola valvata Stokes, 1894 (ref. ID; 1335, 1620) reported year? (ref. ID; 1618)

Descriptions

Stalk about one-half; body protrudes about one-third when extended; brackish water. (ref. ID; 1618)

Measurements

Lorica about 50 um high. (ref. ID; 1618)