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Trilepida jani (PINTO & FERNANDES, 2012)

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Higher TaxaLeptotyphlopidae, Epictinae, Epictini, Typhlopoidea, Serpentes, Squamata (snakes) 
Subspecies 
Common Names 
SynonymTricheilostoma jani PINTO & FERNANDES 2012
Leptotyphlops dimidiatus — SILVEIRA 2004: 411 (part.)
Leptotyphlops dimidiatus — PASSOS et al., 2006: 349 (part.)
Rena dimidiata — HEDGES et al. 2009: 11 (part.)
Tricheilostoma jani — PINTO & FERNANDES 2012
Trilepida jani — WALLACH et al. 2014: 739 
DistributionBrazil (Minas Gerais)

Type locality: Brazil, State of Minas Gerais, Belo Horizonte Municipality, Parque das Mangabeiras, 19°55’S, 43°56’W, elevation ca. 1000 m. Map legend:
Type locality - Type locality.
 
Reproduction 
TypesHolotype: MNRJ 4263, adult male, G. Kisteumacher, 1985.
Paratypes. (n = 21, all from Brazil, State of Minas Gerais): MCN-R 1912, adult female, Municipality of Belo Horizonte, Santo Antoˆnio, 19u579S, 43u569W, C. E. Benfica, 3 May 2005; MCN-R 3647, juvenile female, Municipality of Belo Horizonte, Santo Antonio, Barragem Santa Lu ́ cia, 19°57’S, 43°56’W, C. E. Benfica, 29 October 2002; UFMG, MZUSP 
CommentSynonymy: WALLACH et al. 2014: 724 list this species under Trilepida without justification. They cite Pinto 2010 but that paper neither mentions Trilepida nor jani.

Diagnosis. Tricheilostoma jani can be distinguished from other congeneric species by the follow combination of characters: snout truncate in dorsal and ventral view, rounded in lateral view; supraocular present; ocular subhexagonal with anterior border slightly rounded at eye level, and superior border straight; rostral triangular in dorsal view, not reaching (65%) or reaching (35%) anterior border of ocular scales; frontal as long as supraocular and other middorsal cephalic shields; temporal not distinct (50%) or distinct (50%); two supralabials (1+1); four infralabials; slender body width (37.7 6 4.5); 176–206 middorsal in females and 180–197 in males; 160–188 ventral in females and 161–180 in males; 14–18 subcaudal in females and 15–20 in males; fused caudals present; ten scales around middle of tail; and seven dorsal scales rows with uniform pale brown pigmentation, and the seven unpigmented ventral rows, cream. 
EtymologyEtymology.—The specific epithet is in homage to Giorgio Jan (in memoriam), an important naturalist and curator of Museo Cívico di Storia Naturale di Milano that contributed to the knowledge of these rare snakes. Jan also proposed the name Tricheilostoma as a subgenus of Stenostoma (oldest generic name of leptotyphlopids) in Jan and Sordelli (1860) and Jan (1861), recently resurrected by Adalsteinsson et al. (2009). 
References
  • Hedges, S.B., Marion, A.B., Lipp, K.M., Marin, J. & Vidal, N. 2014. A taxonomic framework for typhlopid snakes from the Caribbean and other regions (Reptilia, Squamata). Caribbean Herpetology 49: 1–61 - get paper here
  • Pinto, Roberta R. and Ronaldo Fernandes 2012. A New Blind Snake Species of the Genus Tricheilostoma from Espinhaço Range, Brazil and Taxonomic Status of Rena dimidiata (Jan, 1861) (Serpentes: Epictinae: Leptotyphlopidae). Copeia 2012 (1): 37-48. - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. Taylor and Francis, CRC Press, 1237 pp.
 
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