Agrafia Szarowska et Falniowski, 2011 (Caenogastropoda: Hydrobiidae) in the Caucasus

Freshwater gastropods of the Caucasus are poorly known. A few minute Belgrandiella-like gastropods were found in three springs in Georgia. Molecular markers: mitochondrial cytochrome oxidase subunit I (COI) and nuclear histone (H3) were used to infer their phylogenetic relationships. The phylogenetic trees placed them most closely to Agrafia from continental Greece. The p-distances indicated that two species occurred in the three localities. Two specimens from Andros Island (Greece) were also assigned to the genus Agrafia. The p-distances between the four taxa, most probably each representing a distinct species, were within the range of 0.026–0.043 for H3, and 0.089–0.118 for COI.