Rediscovery of Populations of Pyrgophorus parvulus (Guilding, 1828) (Gastropoda, Cochliopidae), from a Freshwater Stream on Montserrat, West Indies

Abstract

All previously known localities of Pyrgophorus parvulus (Guilding, 1828) on the Caribbean island of Montserrat were destroyed by volcanic eruptions starting in 1995. Here we document a population in a freshwater stream only indirectly affected by that eruption. Specimens collected on Montserrat are morphologically consistent with P. parvulus and 16S DNA sequences indicate genetic consistency.