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Riassunto/Abstract Angelo Vannozzi. Mauroceras, a new genus for Indo-West Pacific species hitherto assigned to Meioceras (Gastropoda: Caecidae). Boll. Malacol., 55: 55-61 (1, 31/05/2019) Abstract The genus Meioceras Carpenter, 1859 has been created to include caecids from Western Atlantic showing an early teleoconch shaped like a cow’s horn. Later on, Meioceras has been also used for species from the Indo-West Pacific showing similar teleoconch of the adult stage as the species from Western Atlantic. The finding of some larval stages pointed out some differences in terms of protoconch and early teleoconch between species from the Western Atlantic and the Indo-West Pacific. As a consequence, the new genus Mauroceras is proposed to include species from the Indo- West Pacific previously attributed to the genus Meioceras. Keywords Gastropoda, Caecidae, taxonomy, new genus, Indo-West Pacific. Riassunto [Mauroceras, un nuovo genere per le specie dell’Indo-Pacifico occidentale finora attribuite a Meioceras (Gastropoda: Caecidae)]. Il genere Meioceras Carpenter, 1859 venne creato per includere i Caecidae dell’Atlantico occidentale che mostravano una teleoconca iniziale a forma di corno di vacca. Successivamente, Meioceras venne usato anche per specie dall’Indo-Pacifico occidentale che mostravano una teleoconca dello stadio adulto simile a quello delle specie dell’Atlantico occidentale. Il ritrovamento dello stadio larvale di alcune specie ha evidenziato la presenza di alcune differenze a livello di protoconca e di teleoconca iniziale tra le specie dell’Atlantico occidentale e dell’Indo- Pacifico occidentale. Di conseguenza, il nuovo genere Mauroceras viene proposto per includere le specie dell’Indo-Pacifico occidentale precedentemente attribuite al genere Meioceras. Parole chiave Gastropoda, Caecidae, tassonomia, nuovo genere, Indo-Pacifico occidentale. .
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