Abstract
Microcancilla phoenix sp. nov., collected from the Southeast and South coast of Brazil represents the southernmost record of the genus in the Atlantic Ocean. The new species differs from the other congeners of the Atlantic mainly by the presence of microscopic pustules covering the whole shell and by dimensions of the protoconch. “Axelella brasiliensis” Verhecken, 1991, known from the Northeast to South coast of Brazil, is transferred to Microcancilla based on a similar sculpture of microscopic pustules on the protoconch and on other features of the teleoconch discussed in the present study.
Highlights
Cancellariidae Forbes & Hanley, 1851 comprises marine gastropods that inhabit several types of soft bottoms, characterized by small to medium sized, fusiform to ovate shells with gradate to scalariform shapes
We describe a new species of Microcancilla from the Southeast and South coast of Brazil
The records reported by those authors are the southernmost records of M. brasiliensis (~26°S) and one of them is the shallowest record of the species at 206 m (MNRJ 28182)
Summary
Cancellariidae Forbes & Hanley, 1851 comprises marine gastropods that inhabit several types of soft bottoms, characterized by small to medium sized, fusiform to ovate shells with gradate to scalariform shapes. They are dextrally coiled and commonly bear axial and spiral sculptures that produce a cancellate or reticulate surface (Harasewych & Petit, 1998; Petit & Harasewych, 2005). Microcancilla Dall, 1924 is currently considered a member of Admetinae (MolluscaBase, 2018) This genus was erected without a diagnosis and only including Microcancilla microscopica (Dall, 1889). L.S. et al.: A new species of Microcancilla from Brazil brasiliensis” Verhecken, 1991 suggests the classification of this species in Microcancilla
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