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Scincella kikaapoa GARCÍA-VÁZQUEZ, CANSECO-MÁRQUEZ & NIETO-MONTES DE OCA, 2010

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Higher TaxaScincidae, Sphenomorphinae, Scincoidea, Sauria, Squamata (lizards) 
Subspecies 
Common Names 
SynonymScincella kikaapoa GARCÍA-VÁZQUEZ, CANSECO-MÁRQUEZ & NIETO-MONTES DE OCA 2010
Scincella kikaapoa — LINKEM et al. 2011
Scincella kikaapoda — WILSON et al. 2013 (in error)
Scincella kikaapoa — JOHNSON et al. 2017 
DistributionMexico (Coahuila)

Type locality: Mexico, Coahuila, 4 km SE Cuatro Ciénegas, Poza El Mojarral, 26°55’11.9’’N, 100°06’53.2’’W, 739 m elevation. Map legend:
Type locality - Type locality.
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
Reproduction 
TypesHolotype: MZFC 17667, adult male, 6 July 2005, A. Contreras.
Paratypes.—All (n 5 14) from Mexico, Coahuila, Cuatro Cie ́negas Basin: MZFC 17668, same locality as the holotype; MZFC 17664–17666, 13 km S Cuatro Cie ́negas, Poza Azul; MZFC 2012, KU 47088–47089, 12.5 km SE Cuatro Cie ́negas, Poza Churince; UIMNH 43231–43236, 48328, 9.17 km SE Cuatro Cie ́negas. 
CommentThe 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, x = 0.36; vs. limbs separated by 2–23 scales when adpressed against body, hindlimb length/SVL ratio 0.24–0.37, x = 0.30, in S. lateralis) and usually more scales around midbody (28–30, x = 29.0, n = 15; vs. 24–29, x = 26.4, n = 28, in S. lateralis).

Diagnosis. Scincella kikaapoa can be distinguished from all congeners in North and Middle America by having two dark, narrow ventrolateral stripes separated from each other by a narrow ventrolateral pale line on each side (vs. dark ventrolateral stripes on each side absent in S. s. caudaequinae, S. s. silvicola, S. lateralis, and S. gemmingeri). In addition, S. kikaapoa may be distinguished from all congeners in North and Middle America, except S. lateralis, by having three or more pairs of nuchals (vs. fewer than three pairs of nuchals in the other species) and the first nuchal separated from the upper secondary temporal by the tertiary temporal row (in 100% of the specimens, = 5 15; vs. first nuchal in contact with the upper secondary temporal in $92% of the specimens in S. gemmingeri and S. silvicola; n = 81 and 102, respectively; Table 1), 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, x = 0.36; vs. limbs separated by 2–23 scales when adpressed against body, hindlimb length/SVL ratio 0.24–0.37, x = 0.30, in S. lateralis; Table 1) and usually more scales around midbody (28–30, x = 29.0, n = 15, in S. kikaapoa; vs. 24–29, x = 26.4, n = 28, in S. lateralis).

Similar species: S. lateralis. 
EtymologyEtymology.—The specific name kikaapoa is an indeclinable word from the language of the Kikapue, the native people that inhabits the center of Coahuila, that means ‘‘those who walk on the land.’’ 
References
  • García-Vázquez, Canseco-Márquez & Nieto-Montes de Oca, 2010. A New Species of Scincella (Squamata: Scincidae) from the Cuatro Ciénegas Basin, Coahuila, Mexico. Copeia 2010 (3): 373-381 - get paper here
  • Johnson, J. D., L. D. Wilson, V. Mata-Silva, E. García-Padilla, and D. L. DeSantis. 2017. The endemic herpetofauna of Mexico: organisms of global significance in severe peril. Mesoamerican Herpetology 4(3): 544–620
  • Linkem, Charles W.; Arvin C. Diesmos, Rafe M. Brown 2011. Molecular systematics of the Philippine forest skinks (Squamata: Scincidae: Sphenomorphus): testing morphological hypotheses of interspecific relationships. Zoological Journal of the Linnean Society 163: 1217–1243
  • Wilson, Larry David; Vicente Mata-Silva, Jerry D. Johnson 2013. A conservation reassessment of the reptiles of Mexico based on the EVS measure. Amphibian & Reptile Conservation 7 (1): 1–47 - get paper here
 
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