L. arambarensis (Fam. Liolaemodae) is found only in Rio Grande do Sul state, in restingas from Patos lagoon, occurring from Itapuã (lat: 30o 22’ 48’’ S) (Viamão municipality,) to the city of São Lourenço do Sul (lat: 31o 24’ 3’’ S) (Verrastro et al. 2003). Liolaemus arambarensis is a small lizard that inhabits restinga environments in Patos Lagoon (Rio Grande do Sul state), being endemic of these areas. It has about 56 mm to 60 mm of snout-vent length (SVL) for males and females, respectively. The minimum reproductive size is 45.8 mm (SVL) for males and 45.3 mm (SVL) for females (Verrastro et al. 2003). It presents a cryptic coloration, having the same color of the substrate. The lizard is a sedentary grazer, feeding on insects, spiders, and vegetation (Verrastro 2001). It presents an oviparous reproduction that occurs between August and March (Verrastro 2001).