Another new and threatened species of lancehead genus Bothrops (Serpentes, Viperidae) from Ilha dos Franceses, Southeastern Brazil

作者：Barbo Fausto E^*; Gasparini Joao Luiz; Almeida Antonio P; Zaher Hussam; Grazziotin Felipe G; Gusmao Rodrigo B; Ferrarini Jose Mario G; Sawaya Ricardo J

来源：Zootaxa, 2016, 4097(4): 511-529.

DOI：10.11646/zootaxa.4097.4.4

• Atlantic Forest
• Bothrops
• Conservation
• Island rule
• Heterochrony
• taxonomy

A new insular species of the genus Bothrops is described from Ilha dos Franceses, a small island off the coast of Espirito Santo State, in southeastern Brazil. The new species differs from mainland populations of B. jararaca mainly by its small size, relative longer tail, relative smaller head length, and relative larger eyes. The new species is distinguished from B. alcatraz, B. insularis and B. otavioi by the higher number of ventral and subcaudal scales, relative longer tail and smaller head. The new species is highly abundant on the island, being nocturnal, semiarboreal, and feeding on small lizards and centipeds. Due its unique and restricted area of occurrence, declining quality of habitat, and constant use of the island for tourism, the new species may be considered as critically endangered.

• 出版日期2016-4-4