Nierstraszella Sirenko, 1992, Sirenko, 1992

Sigwart, Julia D. & Sirenko, Boris I., 2012, Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species, Zootaxa 3195, pp. 1-38: 25

publication ID 10.5281/zenodo.280094


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Nierstraszella Sirenko, 1992


Nierstraszella Sirenko, 1992  

Type species. Lepidopleurus lineatus Nierstrasz, 1905   . Designated by Sirenko, 1992.

Diagnosis. Valves without insertion plates. Animals of moderate size, up to approximately 20 mm length. Girdle variable, covered in small, blunt to club-shaped spicules. Valves smooth, not sculptured, but covered in thick proteinaceous layer, which may form raised pustules. Radula major lateral teeth tricuspid in juvenile specimens and bicuspid in adults.

Remarks. There are two species recognised in the genus Nierstraszella   , both of which are present in the material discussed here. Sirenko (1992) established the genus Nierstraszella   and synonymised seven species (the nominal taxon Lepidopleurus lineatus   and six junior synonyms) in a monotypic N. lineata   . All of the material illustrated in that study ( Sirenko 1992) are specimens of N. lineata sensu   stricto. Subsequently, N. lineata   was divided into two valid species on the basis of new specimens and re-examination of the type material, reviving one junior synonym ( Lepidopleurus andamanicus   ) and incorporating two others under N. andamanica   ( Sigwart 2009 b). The specimens examined in the course of this study are the same material examined by Sigwart (2009 b), which illuminated the morphological differences separating the two currently recognised species of Nierstraszella   .