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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Hypotrichidium

Hypotrichidium Ilowaisky, 1921 (ref. ID; 2014)

Class Polyhymenophora: Subclass Spirotricha: Order Hypotrichida: Suborder Stichotrichina: Family Spirofilidae (ref. ID; 2014)

Synonym Peritromoides Bhatia, 1936 (ref. ID; 2014); Spirofilum Gelei, 1929 (ref. ID; 2014)

[ref. ID; 2014]
Plump, planktonic forms with compact sturdy, cone-like bodies which taper anteriorly; the posterior is bluntly pointed. 2 ventral and 2 marginal rows of cirri which spiral around the body. The peristome is large and broad with the AZM extending at least half the body length. 2 undulating membranes situated on the right of the peristome. Macronucleus divided into two elongate or ovoid parts each with an adjacent micronucleus. Transverse cirri absent. Only a few species have been described. Revision of species by Stiller (1975). Jankowski (1979) places Tuffrau's H. faurei in a new genus Pelagotrichidium Jankowski, 1978.
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. Hypotrichidium conicum Ilowaisky, 1921 (ref. ID; 1308, 1335, 1621, 1629, 4609, 4613, 7735) reported year? (ref. ID; 1618) reported author and year? (ref. ID; 191)
  2. Hypotrichidium faurei Tuffrau, 1972 (ref. ID; 4613) reported author and year? (ref. ID; 191)
    See; Pelagotrichidium faurei (ref. ID; 4613)

Hypotrichidium conicum Ilowaisky, 1921 (ref. ID; 1308, 1335, 1621, 1629, 4609, 4613, 7735) reported year? (ref. ID; 1618) reported author and year? (ref. ID; 191)

Measurements

90-150 um long. (ref. ID; 1618)