A new species of pit-viper from the Ayeyarwady and Yangon regions in Myanmar (Viperidae, ).

In a genomic study by Chan and colleagues, pit-vipers of the - complex from the Ayeyarwady and Yangon regions in Myanmar were demonstrated to be a distinct species based on robust population genetic and species delimitation analyses. Here, we provide morphological characterizations and a formal description of those populations as a new species. The new species, , is most closely related to and and shares morphological characteristics with both of those species.