Revalidation of Apostolepis barrioi (Serpentes: Dipsadidae)

Abstract

With 32 species, Apostolepis is the most diverse genus in the tribe Elapomorphini. The description of Apostolepis barrioi is based on one specimen and the taxon later was synonymized with A. dimidiata. Based on a examination of new specimens, the taxon is resurrected to full species rank. Apostolepis barrioi differs from all congeners by having an immaculate white venter, narrow dorsolateral stripes not in contact with the ventrals, and a terminal black shield. With the addition of A. barrioi, the number of species of the genus increases to 33; however, more systematic research on the status of the species in the group is required, especially for those species that were described on the basis of only on few specimens.