Heterostentor coeruleus Song and Wilbert, 2002

Wilbert, Norbert & Song, Weibo, 2005, New contributions to the marine benthic ciliates from the Antarctic area, including description of seven new species (Protozoa, Ciliophora), Journal of Natural History 39 (13), pp. 935-973 : 952-953

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https://doi.org/ 10.1080/00222930400001509

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Heterostentor coeruleus Song and Wilbert, 2002


Heterostentor coeruleus Song and Wilbert, 2002

( Figures 7D–H View Figure 7 , 14J–N View Figure 14 )

The present population resembles the form described previously (Song and Wilbert 2002), so a complete redescription is unnecessary. Only the main features found to vary from the 2002 population are included here.


Body often more slender oval than elongated cylindrical, dorsoventrally only slightly flattened, length to width about 1:2–3 when moving freely, but 1:3–5 when attached to substratum by posterior end of cell and contracting from time to time ( Figure 7F View Figure 7 ). Dark blue pigments beneath pellicle arranged in at least two patterns: sparsely distributed between ciliary rows with larger granules or conspicuously densely distributed ( Figure 7G, H View Figure 7 ). In anterior cell end (around adoral zone of membranelles), these pigments/granules render the cell dark blue.

Numerous membranelles in adoral zone which, in vivo, appear to be clustered into about 20 groups of membranelles ca 25 M m long and extend forwards ( Figure 7E View Figure 7 ).

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