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Chilabothrus argentum REYNOLDS, PUENTE-ROLÓN, GENEVA, AVILES-RODRIGUEZ & HERRMANN, 2016

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Higher TaxaBoidae (Boinae), Henophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesConception Bank Silver Boa 
SynonymChilabothrus argentum REYNOLDS, PUENTE-ROLÓN, GENEVA, AVILES-RODRIGUEZ & HERRMANN 2016 
DistributionBahamas (Conception Island Bank)

Type locality: Conception Island Bank, Bahamas (not explicitly given)  
Reproductionviviparous (predicted, based on related species) 
TypesHolotype. MCZ R-193527. An adult female obtained 21 October 2015. Found at night climbing 1.5 m high in a B. simaruba tree. Specimen measurements are listed in Table 1 in Reynolds et al. 2016. Specimen squamation on the right side is as follows: 278 ventrals, 83 subcaudals, 14 supralabials, 1 loreal, 1 preocular, 1 suborbital, 4 postoculars, and 2 supraoculars.
Paratype. MCZ R-193528. An adult male, obtained 21 October 2015. Found at night moving horizontally 2 m high on a B. simaruba branch. Specimen measurements are listed in Table 1. Specimen squamation on the right side is as follows: 278 ventrals, 83 subcaudals, 13 supralabials, 1 loreal, 1 preocular, 1 suborbital, 4 postoculars, and 1 supraocular. Preocular and sixth supralabial scales on the left side of the head are malformed, as is the fifth supralabial on the right side of the head. 
CommentDefinition. A species of Chilabothrus boid snake possessing the following characteristics: silver to tan dorsal background coloration with or without scattered dark brown scales, which appear either individually or in small clusters; a reduced to absent dorsal pattern consisting of faint light-gray elongate dorso- ventral blotching, occasionally no pattern is obvious; pure cream-white ventral scales; a single loreal scale; ventral scale count ranging from 275 to 282; subcaudal scale count ranging from 82 to 91; a low number (11–12) of supralabials; 9–10 circumorbitals; largely arboreal substrate use; phylogenetic distinctiveness at mitochondrial locus CYTB consisting of . 3% pairwise divergence from other Bahamian Chilabothrus species.

Habitat: This species is apparently largely arboreal, and has been found in Coco- thrinax argentata and B. simaruba. 
EtymologyThe species name, argentum, is the nominative Latin word for silver, referencing the silver coloration of the first specimen encountered in July 2015 as well as its location in a silver palm (Cocothrinax argentata) when encountered. 
References
  • Kwet, Axel 2016. Eine neue Schlankboa von den Bahamas: die Conception-Silberboa (Chilabothrus argentum). Terraria-Elaphe 2016 (6): 50 - get paper here
  • Reynolds, R. Graham; Alberto R. Puente-Rolón, Anthony J. Geneva, Kevin J. Aviles-Rodriguez, and Nicholas C. Herrmann 2016. Discovery of a Remarkable New Boa from the Conception Island Bank, Bahamas Breviora 549 (1): 1-19 - get paper here
 
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