Barred, blotched or intermediate? A photographic-based survey on the spatial distribution of Vipera aspis phenotypes from central-southern Italy

MR Di Nicola, F Storniolo, A Cerullo… - Basic and Applied …, 2024 - ojs.herpetologica.org
Variation in animal colouration, which holds ecological and evolutionary significance, is
evident in snakes, including the polytypic and highly polymorphic asp viper Vipera aspis …