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Abstract
A previously unidentified, small, centric diatom from Cappadocia, Central Turkey is described as a new species and genus (Clipeoparvus anatolicus). Cells of this diatom are sub-spherical, often linked in pairs and covered with irregular spines. Striae radiate around a hyaline area on the valve face. Neither rimoportulae nor fultoportulae were found.
Clipeoparvus anatolicus is highly abundant within a modern brackish crater-lake (Nar Golti), where it appears to grow benthically or epiphytically in the silica-rich, eutrophic, circumneutral waters. It is also common in late Holocene sediment cores, contributing over 40% of the total assemblage in samples of medieval age. This taxon also increased in abundance in the lake between 2001 and 2008. It was first encountered during research to reconstruct the late Holocene palaeoclimate of central Turkey using diatom-water chemistry relationships. Knowledge of this species' ecological preferences and geographical extent will improve its use as an environmental indicator.