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Agkistrodon bilineatus GÜNTHER, 1863

IUCN Red List - Agkistrodon bilineatus - Near Threatened, NT
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Higher TaxaViperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Cantil, Mexican Moccasin
G: Mexikanische Mokassinschlange
S: Cantil or Zolcuate 
SynonymAncistrodon bilineatus GÜNTHER 1863
Agkistrodon bilineatus — STEJNEGER 1899: 71
Agkistrodon bilineatus — GLOYD & CONANT 1943: 163
Agkistrodon bilineatus — LINER 1994
Agkistrodon bilineatus — MCDIARMID, CAMPBELL & TOURÉ 1999: 235
Agkistrodon bilineatus lemosespinali SMITH & CHISZAR 2001
Agkistrodon bilineatus — SAVAGE 2002
Agkistrodon bilineatus — GOWER et al. 2012: 78
Agkistrodon bilineatus — WALLACH et al. 2014: 18 
DistributionMexico (S Sonora, Sinaloa, Nayarit, Jalisco, Morelos, Colima, Michoacan, Guerrero, Oaxaca, Chiapas, Puebla, Chihuahua), Guatemala, El Salvador, W Honduras

Type locality: Pacific coast of Guatemala.  
Reproductionovoviviparous 
TypesType: BMNH 1864.1.26.396 
DiagnosisUnfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 701 characters), are available for collaborators and contributors. Please contact us for details. 
CommentVenomous!

Illustration: See color plate 79 in VILLA et al. 1988 and Trutnau 2001.

Distribution: See maps in Trutnau (2001) and Porras et al. 2013. There is only one report from Honduras based on a photograph (Porras et al. 2013). Reported from Costa Rica by Solorzano 2004.

Nomenclature: The author is not in parentheses, as this case follows ICZN article 51.3.1. “Parentheses are not used when the species-group name was originally combined with an incorrect spelling or an emendation of the generic name (this applies even though an unjustified emendation is an available name with its own authorship and date [Art. 33.2.3]).”

Subspecies: all subspecies have been elevated to species status by PARKINSON et al. (2000) based on mtDNA sequences or PORRAS et al. 2013. The status of A. b. lemosespinali remains uncertain fide PORRAS et al. 2013. Campbell and Lamar (2004: 266) indicated that this taxon “was diagnosed by several characteristics, all of which are within the normal range of variation for A. taylori or might be artifacts in a specimen preserved for more than 30 years.” 
EtymologyNamed after Latin “bis” = two, double and Latin linea = line, plus the Latin suffix -atus, meaning provided with; in allusion to the yellow lines, one above the eye and one below, along the side of the head. 
References
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