Abstract

A new lizard species of the genus Cnemidophorus (Teiidae) is described from Barra de Maricá, Rio de Janeiro State, southeastern Brazil. The species is characterized by having a narrow pale vertebral stripe, with two irregular narrow stripes [one dorsolateral (sometimes broken) and one lateral] on each side of it, and a sequence of small pale dashes on each side of the dorsal field. Its tail is bright blue-green, in contrast to the brownish tail of C. ocellifer. The new species has higher counts of femoral pores on each side (12–20) than the closely related species C. ocellifer (7–12) and C. nativo (11–13) and differs further from those species in other morphometric and meristic characters, such as the number of subdigital lamellae on fingers and toes and transversal and longitudinal counts of ventral scale rows.Uma nova espécie de lagarto do gênero Cnemidophorus (Teiidae) é descrita de Barra de Maricá, no Estado do Rio de Janeiro, sudeste do Brasil. A espécie é caracterizada por uma listra vertebral clara e estreita e duas listras irregulares (uma dorsolateral [que pode ser interrompida] e uma lateral) de cada lado da mesma, com uma sequência de pequenos pontos claros de cada lado do campo dorsal. Sua cauda é verde-azulada, contrastando com a cauda marrom de C. ocellifer. A nova espécie possui mais poros femorais de cada lado (12–20) do que as espécies próximas C. ocellifer (7–12) e C. nativo (11–13), e difere destas também em outros caracteres merísticos, como o número de lamelas subdigitais dos dedos e artelhos e as contagens transversais e longitudinais de escamas ventrais.

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