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1 September 2010 A New Species of Scincella (Squamata: Scincidae) from the Cuatro Ciénegas Basin, Coahuila, Mexico
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Abstract

A new species of Scincella, previously confused with S. lateralis, is described from the Cuatro Ciénegas Basin, Coahuila, Mexico. The new species differs from all congeners in North and Middle America by possessing two dark, narrow ventrolateral stripes on each side (vs. dark, narrow ventrolateral stripes on each side absent in the other species); from all congeners in North and Middle America, except S. lateralis, by having three or more pairs of nuchal scales (vs. fewer than three pairs of nuchals in the other species) and the first nuchal in contact with the tertiary temporal row (vs. first nuchal usually in contact with the upper secondary temporal in the other species); and from S. lateralis by having longer limbs (limbs overlapping by 1–15 scales when adpressed against body, hindlimb length/SVL ratio 0.30–0.42, i0045-8511-2010-3-373-e01.gif  =  0.36; vs. limbs separated by 2–23 scales when adpressed against body, hindlimb length/SVL ratio 0.24–0.37, i0045-8511-2010-3-373-e02.gif  =  0.30, in S. lateralis) and usually more scales around midbody (28–30, i0045-8511-2010-3-373-e03.gif  =  29.0, n  =  15; vs. 24–29, i0045-8511-2010-3-373-e04.gif  =  26.4, n  =  28, in S. lateralis). The new species is geographically closest, and morphologically most similar, to S. lateralis.

2010 by the American Society of Ichthyologists and Herpetologists
Uri Omar García-Vázquez, Luis Canseco-Márquez, and Adrián Nieto-Montes de Oca "A New Species of Scincella (Squamata: Scincidae) from the Cuatro Ciénegas Basin, Coahuila, Mexico," Copeia 2010(3), 373-381, (1 September 2010). https://doi.org/10.1643/CH-09-045
Received: 12 February 2009; Accepted: 1 March 2010; Published: 1 September 2010
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