Abstract
A new species of pulmonate snail was recently collected in a small forest fragment in the city of Bom Jesus da Lapa, Bahia state, Brazil. Bahia is known for a high diversity of land snails and Bom Jesus da Lapa is an interesting locality, since it is close to the interface between two major Brazilian biomes: Cerrado and Caatinga. The new species is described as Cyclodontina tapuia sp. nov. and can be easily identified by its brown shell, conical spire, convex whorls, a sculpture comprised of strong ribs, and an aperture with four barriers: a median parietal tooth, a median palatal tooth, a median basal tooth and a strong columellar lamella. This discovery is also a reminder of how little the Brazilian continental molluscan fauna is known and of the urgency in studying and preserving the rich (though usually overlooked) fauna of the Caatinga.
Highlights
The new species is described as Cyclodontina tapuia sp. nov. and can be identified by its brown shell, conical spire, convex whorls, a sculpture comprised of strong ribs, and an aperture with four barriers: a median parietal tooth, a median palatal tooth, a median basal tooth and a strong columellar lamella
None of the conchological features of Cyclodontina tapuia sp. nov. is exclusive when compared to its congeners, but the set of diagnostic features makes the species readily identifiable
The species which share with C. tapuia the conical shell profile are: C. chaseae Marshall, 1926, from Alagoas and Bahia states; C. fasciata (Potiez & Michaud, 1832), from Ceará, Rio Grande do Norte and Bahia states; C. inflata (Wagner, 1827), which occurs from northern Brazil to Uruguay; C. maranguapensis (Baker, 1913), from Ceará state; and C. scabrella (Anthony in Dohrn, 1882), from Paraíba and São Paulo states
Summary
A new species of pulmonate snail was recently collected in a small forest fragment in the city of Bom Jesus da Lapa, Bahia state, Brazil. Bahia is known for a high diversity of land snails and Bom Jesus da Lapa is an interesting locality, since it is close to the interface between two major Brazilian biomes: Cerrado and Caatinga.
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