Description of a new species of Calliostoma (Gastropoda, Calliostomatidae) from Southeastern Brazil

Description of a new species of Calliostoma (Gastropoda, Calliostomatidae) from Southeastern Brazil

Blog Article

Calliostoma tupinamba is a new species from Southeastern Brazil, ranging from southern Rio de Janeiro to northern São Paulo, and found only on coastal islands, on rocks and sessile invertebrates at 3 to 5 meters of depth.Shell and soft part morphology is described here in detail.Calliostoma tupinamba is mainly characterized by a depressed trochoid shell; eight slightly convex whorls; a sharply read more suprasutural carina starting on the third whorl and forming a peripheral rounded keel; and a whitish, funnel-shaped and deep umbilicus, measuring about 5%–10% of maximum shell width.Calliostoma tupinamba resembles C.

bullisi Clench & Turner, 1960 in shape, but differs from it in being taller and wider,a smaller umbilicus and lacking a strong and large innermost spiral cord at its base.Finally, an grandpas best identification key of Brazilian Calliostoma species is presented.