First record of two species of venomous snakes Bungarus suzhenae and Ovophis zayuensis (Serpentes: Elapidae, Viperidae) from India

Abstract

We report Bungarus suzhenae Chen, Shi, Vogel, Ding & Shi, 2021 and Ovophis zayuensis (Jiang, 1977) for the first time from India. Specimens of B. suzhenae and O. zayuensis were collected during our field surveys in north (Arunachal Pradesh) and south (Nagaland-Manipur border) of the river Brahmaputra. Species identity was supported by partial cytochrome b (cyt b), and 16s mitochondrial gene. We provide a detailed morphological description and a key to the two genera of this region. This report extends the westernmost distribution of B. suzhenae by ca. 300 km from Myanmar, and the southernmost range of O. zayuensis by 170 km from Tibet. Until now eight species of Bungarus and only one Ovophis species have been reported from India. Ovophis species are recently reported to be medically important venomous snakes whose venom properties have not been investigated in depth.