Colour pattern analysis of sand lizard from two populations in the Samara region

On adult individuals of two sand lizard populations separated by river Volga from the Samara region the variation of dorsal pattern and colour was studied. 10 morphs and aberrations of colour pattern were revealed. The frequency of non-modal colouration types was generally stable among study years (2011-2013), significant differences being revealed only between male samples of 2011 and 2012 from the right-bank population. Males of the latter populations also exhibited some apparently age-related changes of colouration.