New and interesting diatoms from Tibet: I. Description of a new species of Clipeoparvus Woodbridge et al

We present light and scanning electron microscopical observations on frustules of a new species of Clipeoparvus Woodbridge et al. from Tibet. Cells are small, lens-shaped to conical, have internally occluded areolae and lack any processes. The Tibetan species differs from Clipeoparvus anatolicus Woo...

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Bibliographic Details
Published in:Diatom research 2019-01, Vol.34 (1), p.33-38
Main Authors: Liu, Qi, Li, Jiajia, Nan, Fangru, Feng, Jia, Lv, Junping, Xie, Shulian, Kociolek, John Patrick
Format: Article
Language:English
Subjects:
Bacillariophyta
biogeography
Cells
Clipeoparvus
Diatoms
freshwater
Janus cells
New species
Physical characteristics
Scanning electron microscopy
Spines
Taxa
Tibet
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Summary:We present light and scanning electron microscopical observations on frustules of a new species of Clipeoparvus Woodbridge et al. from Tibet. Cells are small, lens-shaped to conical, have internally occluded areolae and lack any processes. The Tibetan species differs from Clipeoparvus anatolicus Woodbridge, E.J. Cox & Roberts, the only other known species of the genus described from Turkey, by the number, size and structure of the spines on the valve face. Two morphs were encountered, one bearing spines and the other without spines, and they can occur separately or in the same frustule. This phenomenon may be an example of Janus cells within this taxon. The biogeographic distribution of this taxon is discussed.
ISSN:0269-249X
2159-8347
DOI:10.1080/0269249X.2019.1578697