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Conopsis biserialis (TAYLOR & SMITH, 1942)

IUCN Red List - Conopsis biserialis - Least Concern, LC

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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesTwo-lined Mexican Earth Snake 
SynonymConophis biserialis TAYLOR & SMITH 1942: 333
Conopsis biserialis — LINER 1994
Conopsis biserialis — GOYENECHEA & FLORES-VILLELA 2006
Conopsis biserialis — WALLACH et al. 2014: 181 
DistributionMexico (Distrito Federal, Guanajuato, Jalisco, Estado de México, Michoacán, Morelos, and Puebla); elevation 1700 to 3080 m.

Type locality: 10 miles W Villa Victoria, Estado de México. Map legend:
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.
 
Reproductionviviparous 
TypesType: FMNH 100062 
CommentDiagnosis: This species is characterized by the following combination of characters: divided internasals and prefrontals; brown-gray dorsal coloration, and two series of dots along body, or a tessellated pattern of dorsal spots. Ventrally it is yellowish with a series of black dots medially. Conopsis biserialis can be distinguished from other species in the genus by its characteristic dorsal spots pattern. Conopsis biserialis shares its characteristic dorsal pattern of spots with Conopsis amphisticha, with which it can be confused, but their geographic ranges do not overlap.

Distribution: reports from Hidalgo appear to be erroneous (Lemos-Espinal & SMith 2015). 
References
  • Castaneda-Gonzalez, Oiva; Javier Manjarrez, Irene Goyenechea, and Victor Fajardo 2011. Ecology of a Population of the Earthsnake Conopsis biserialis in the Mexican Transvolcanic Axis. Herp. Cons. Biol. 6 (3) - get paper here
  • Castro-Franco, Rubén, María Guasalupe Bustos-Zagal 1994. List of reptiles of Morelos, Mexico, and their distribution in relation to vegetation types. Southwestern Naturalist 39 (2): 171-175 - get paper here
  • Davis, William B.; Smith, Hobart M. 1953. Snakes of the Mexican state of Morelos. Herpetologica 8: 133-149 - get paper here
  • Goyenechea, Irene & Flores-Villela, Oscar 2002. Taxonomic status of the snake genera Conopsis and Toluca (Colubridae). Journal of Herpetology 36 (1): 92-95 - get paper here
  • GOYENECHEA, IRENE & OSCAR FLORES-VILLELA 2006. Taxonomic summary of Conopsis, Günther, 1858 (Serpentes: Colubridae). Zootaxa 1271: 1–27 - get paper here
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Raya-García, E., et al. 2017. Conopsis biserialis and C. nasus (Mexican Earthsnakes) probing. Herpetological Review 48 (2): 376-377
  • Raya-García, E., J. Alvarado-Díaz & I. Suazo-Ortuño 2016. Litter size and relative clutch mass of the earthsnakes Conopsis biserialis and C. nasus (Serpentes: Colubridae) from the central Mexican Transvolcanic Axis. Salamandra 52 (2): 217-220 - get paper here
  • Taylor, Edward H. & Smith,H.M. 1942. The snake genera Conopsis and Toluca. Univ. Kansas Sci. Bull. 28 (15): 325-363 - 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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