Vertigo marciae, a new species of gastropod mollusk (Pupilloidea: Vertiginidae), is described from Jamaica. This species is known in the Recent fauna only from John Crow Peak in the Blue Mountains, but also occurs as a Pleistocene fossil at Red Hills Road Cave.
Vertigo marciae has been confused with
Vertigo gouldii, but differs by its smaller shell size, lack of distinct shell striation, lack of an angular lamella, and presence of a flared aperture base. DNA sequence analyses document that V. marciae possesses unique mtDNA and nDNA sequences and is most closely allied with
Vertigo alabamensis,
Vertigo hebardi, and
Vertigo oscariana. This group of species comprises a highly supported clade whose members are limited either to the Caribbean or the southeastern USA.