title: Another new and threatened species of lancehead genus Bothrops (Serpentes, Viperidae) from Ilha dos Franceses, Southeastern Brazil.
abstract: A new insular species of the genus Bothrops is described from Ilha dos Franceses, a small island off the coast of Espírito 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.
authors.affiliation: Museu de Zoologia, Universidade de São Paulo, P.B. 42494, São Paulo 04218-970, São Paulo, Brazil; Email: faustoebarbo@gmail.com.
authors.forename: Fausto E
authors.initials: FE
authors.lastname: Barbo
authors.affiliation: Departamento de Ecologia e Oceanografia, Universidade Federal do Espírito Santo, Vitória 29075-910, Espírito Santo, Brazil; Email: unknown.
authors.forename: João Luiz
authors.initials: JL
authors.lastname: Gasparini
authors.affiliation: ICMBIO, Reserva Biológica de Comboios. P.B. 105, CEP 29900-970, Linhares, Espírito Santo, Brazil; Email: unknown.
authors.forename: Antonio P
authors.initials: AP
authors.lastname: Almeida
authors.affiliation: Museu de Zoologia, Universidade de São Paulo, P.B. 42494, São Paulo 04218-970, São Paulo, Brazil; Email: unknown.
authors.forename: Hussam
authors.initials: H
authors.lastname: Zaher
authors.affiliation: Museu de Zoologia, Universidade de São Paulo, P.B. 42494, São Paulo 04218-970, São Paulo, Brazil; Email: unknown.
authors.forename: Felipe G
authors.initials: FG
authors.lastname: Grazziotin
authors.affiliation: Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema 09972-270, São Paulo SP, Brazil; Email: unknown.
authors.forename: Rodrigo B
authors.initials: RB
authors.lastname: Gusmão
authors.affiliation: Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema 09972-270, São Paulo SP, Brazil; Email: unknown.
authors.forename: José Mário G
authors.initials: JM
authors.lastname: Ferrarini
authors.affiliation: Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema 09972-270, São Paulo SP, Brazil; Email: unknown.
authors.forename: Ricardo J
authors.initials: RJ
authors.lastname: Sawaya
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D017837:Bothrops / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D001938:Brazil; D017753:Ecosystem; D056727:Endangered Species; D005260:Female; D008297:Male; D009929:Organ Size