A Phylogenetic Study of the Emerald Treeboa (Corallus caninus)

Phylogenetic relationships of Corallus caninus phylogeny were examined with DNA samples from five geographically disparate localities from across the range of the species (Guyana, Venezuela, Brazilian states of Paraand Rondonia, and Peru). The Peruvian sequence was the most divergent (16.2%) and the closest relative of a clade including Brazilian, Guyanan, and Venezuelan populations. Within the latter clade, the most basal lineage was from the state of Para ´, followed by the state of Rondonia, which was the closest relative of populations from the Guiana Shield. Preliminary morphological data paralleled molecular results, and it is likely that a separate species of Corallus currently included in C. caninus occurs in the upper Amazon.