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Leposoma sinepollex RODRIGUES, TEXEIRA, RECODER, DAL VECHIO, DAMASCENO & MACHADO-PELLEGRINO, 2013

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Higher TaxaGymnophthalmidae (Cercosaurinae s.l., Ecpleopodinae), Sauria, Gymnophthalmoidea, Squamata (lizards) 
Subspecies 
Common Names 
SynonymLeposoma sinepollex RODRIGUES, TEXEIRA, RECODER, DAL VECHIO, DAMASCENO & MACHADO-PELLEGRINO 2013 
DistributionBrazil (Bahia)

Type locality: Estação Ecológica Estadual de Wenceslau Guimarães (13°34’43.60”S, 39°42’35.40”W, 500 m elevation, WGS84), municipality of Wenceslau Guimarães, state of Bahia, Brazil.  
Reproduction 
TypesHolotype: MZUSP 102266 (Fig. 1), an adult male, collected by the authors on December 9th, 2011. Field number MTR 21979.
Paratypes: MZUSP 102265, 102267 and 102268 (13°34'43.00"S, 39°42'32.80"W, 480 m a.s.l., WGS84) a young female, a young male, and, an adult female collected respectively on December 14th, 11th and, 17th 2011, field numbers MTR 21950, 22062 and 22063; MZUSP 102269 (13°34'42.80"S, 39°42'46.70"W, 550 m a.s.l., WGS84), an adult female collected on December 10th 2011, field number 22094; MZUSP 102270, a young male, collected on December 14th 2011, field number MTR 22247; MZUSP 102271 (13°34'42.68"S, 39°42'29.88"W, 495 m a.s.l., WGS84), an adult male collected on December 17th 2011, field number MTR 22287. All from Estação Ecológica Estadual de Wenceslau Guimarães, state of Bahia, Brazil, collected by the authors. 
DiagnosisDiagnosis: A Leposoma characterized by elongate dorsal and lanceolate ventral scales arranged in diagonal rows, frontonasal single and smooth, five supraoculars, absence of pollex, third toe as long as or longer than fourth, absence of striations in lower part of head, parietals longer than wide and as long as interparietal, 27–29 dorsals, 25–29 scales around body, 17–19 ventrals, 12–14 pores in the male (absent in females), 9–10 and 9–11 subdigital lamellae respectively under IV Finger and IV Toe, and strong sexual dichromatism. Comparative meristic characters among Leposoma species are presented in Table 1 (in RODRIGUES et al. 2013). 
CommentLeposoma sinepollex is characterized by elongate dorsal and lanceolate ventral scales arranged in diagonal rows, a single and smooth frontonasal, five supraoculars, absence of pollex, third toe as long as or longer than fourth, absence of striations in lower part of head, parietals longer than wide and as long as interparietal, 27–29 dorsals, 25–29 scales around body, 17–19 ventrals, 12–14 total pores in the male (absent in females), 9–10 and 9–11 subdigital lamellae respectively under IV Finger and IV Toe, and strong sexual color dichromatism with a black pigmentation in the ventral parts of males, creamy in females.

Similar species: Leposoma nanodactylus, sharing with sinepollex the synapomorphic division of the first supraocular.

Abundance: only known from its original description (Meiri et al. 2017). 
EtymologyThe specific name derives from the Latin “sine” (absent) and “pollex” (thumb), being a reference to the lack of the first finger in this species. 
References
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • RODRIGUES, MIGUEL TREFAUT; MAURO TEIXEIRA JR., RENATO SOUSA RECODER, FRANCISCO DAL VECHIO, ROBERTA DAMASCENO & KATIA CRISTINA MACHADO PELLEGRINO 2013. A new species of Leposoma (Squamata: Gymnophthalmidae) with four fingers from the Atlantic Forest central corridor in Bahia, Brazil. Zootaxa 3635 (4): 459–475 - get paper here
 
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