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Adelphicos latifasciatum LYNCH & SMITH, 1966

IUCN Red List - Adelphicos latifasciatum - Data Deficient, DD

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Oaxacan Burrowing Snake
S: Ocotera de Oaxaca 
SynonymAdelphicos veraepacis latifasciatus LYNCH & SMITH 1966: 66
Adelphicos veraepacis latifasciatus— PETERS & OREJAS-MIRANDA 1970: 16
Adelphicos latifasciatus — LINER 1994
Adelphicos latifasciatum — LINER 2007
Adelphicos latifasciatum — WALLACH et al. 2014: 9
Adelphicos latifasciatum — HEIMES 2016: 201 
DistributionSE Mexico (Oaxaca)

Type locality: Mexico: Zanatepec, Sierra Madre, Oaxaca  
TypesHolotype: INHS (= UIMNH) 56147; T. MacDougall; September 6-12, 1963. 
DiagnosisDiagnosis. The species may be distinguished from all other members of the veraepacis group by the high number of subcaudals in males (46—51) and females (37—41), its relatively long tail comprising 20.4—22.3% and 14.6—15.6% of the total length in males and females respectively, and its broad middorsal stripe that in- cludes the vertebra] and adjacent halves of the paravertebral scale rows. The modal number of teeth tends to be more (11 maxillary, 11 dentary, 9 palatal, and 18 pterygoid) than in the other species. It can be distinguished from A. daryi and A. veraepacis by its pale to reddish brown ground color. It differs from A. daryi, A. verae- pacis, and most A. nigrilatus by lacking paravertebral stripes and having an unpigmented venter. In A. latifasciatus the lateral stripe involves scale row 3 and adjacent halves of scale rows 2 and 4, whereas in A. daryi and A. oeraepacis the stripe includes scale row 2 and adjacent portions of scale rows 1 and 3 (Campbell & Ford 1982).

Coloration: In four specimens of A. latifasciatus from Cerro Baul, Oaxaca, the ground color is reddish to pale brown, the lateral stripes involve scale row 3 and adjacent parts of rows 2 and 4. Paravertebral stripes are absent, and the vertebral stripe includes the vertebral and half of the paravertebral scale rows. The top of the head is dark brown, extending to the upper part of the supralabials. The gular area and ventrals arc immaculate except for the pale mottling on the outer portion of the ventrals. The subcaudals arc pale with a midventral stripe along their median sutures. Except for their pale dorsal ground color, these specimens agree in aspects of pattern and color with the description given for the holotype (Lynch and Smith, 1966). The terms "dark" and "pale" are relative and we suspect from viewing the photograph of the holotype (Lynch and Smith, 1966:67) that even the ground color is in agreement (Campbell & Ford 1982). 
EtymologyThe name latifasciatus is derived from the Latin lati, meaning broad or wide, and fasciatus, meaning a band, and refers to the distinctive broad dorsal stripe. 
  • Aguilar-López JL, Luría-Manzano R, Pineda E, Canseco-Márquez L 2021. Selva Zoque, Mexico: an important Mesoamerican tropical region for reptile species diversity and conservation. ZooKeys 1054: 127-153 - get paper here
  • Campbell J A; Brodie E D Jr 1988. A new colubrid snake of the genus Adelphicos from Guatemala. Herpetologica 44 (4): 416-422 - get paper here
  • Campbell J A; Ford L S 1982. Phylogenetic relationships of the colubrid snakes of the genus Adelphicos in the highlands of Middle America. OCCASIONAL PAPERS OF THE MUSEUM OF NATURAL HISTORY UNIVERSITY OF KANSAS (No. 100): 1-22 - get paper here
  • Casas-Andreu, G., F.R. Méndez-De la Cruz and X. Aguilar-Miguel. 2004. Anfibios y Reptiles; pp. 375–390, in A.J.M. García-Mendoza, J. Ordoñez and M. Briones-Salas (ed.). Biodiversidad de Oaxaca. Instituto de Biología, UNAM-Fondo Oaxaqueño para la Conservación de la Naturaleza-World Wildlife Fund, México, D. F.
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Liner, Ernest A. 2007. A CHECKLIST OF THE AMPHIBIANS AND REPTILES OF MEXICO. Louisiana State University Occasional Papers of the Museum of Natural Science 80: 1-60 - get paper here
  • Lynch,J. D., & SMITH, H. M. 1966. New or unusual amphibians and reptiles from Oaxaca, Mexico, II. Trans. Kansas Acad. Sci. 69: 58-75. - get paper here
  • Mata-Silva, Vicente, Jerry D. Johnson, Larry David Wilson and Elí García-Padilla. 2015. The herpetofauna of Oaxaca, Mexico: composition, physiographic distribution, and conservation status. Mesoamerican Herpetology 2 (1): 6–62 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
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