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Dipsas chaparensis REYNOLDS & FOSTER, 1992

IUCN Red List - Dipsas chaparensis - Least Concern, LC

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common Names 
SynonymDipsas chaparensis REYNOLDS & FOSTER 1992
Dipsas chaparensis — HARVEY & EMBERT 2008: 74
Dipsas chaparensis — WALLACH et al. 2014: 231 
DistributionBolivia (Cochabamba, Santa Cruz; 1800-3100 m elevation)

Type locality: ‘‘Paracti, 83.2 km from Cochabamba on road to Villa Tunari’’, 2300–3100 m elevation.  
Reproductionoviparous 
TypesHolotype: USNM 257869 
DiagnosisDiagnosis.—Dipsas chaparensis differs from all congeners by the following combination of characters: (1) dorsals variable: 15, 17, or 13, with or without reduction; (2) post-oculars excluding temporals from orbit; (3) 1 pair of infralabials in contact behind mental; (4) infralabials broadly contacting second pair of chinshields; sublabials ordinarily separating infralabials from third pair of chinshields, preventrals, and ventrals; (5) loreal square, entering orbit; (6) preocular present above loreal, excluding prefrontal from orbit; (7) head tan usually with brown spots not edged in yellow or black; (8) supralabials tan, their dorso-posterior apices brown; (9) nuchal collar tan; first blotch not reaching rictus and separated from parietals by 3–5 vertebrals; (10) dorsal body tawny to cinnamon with chestnut brown blotches edged first in black, then in cream; (11) dorsal blotches incomplete ventrally, forming bands anteriorly and ovals about as large as or narrower than interspaces posteriorly; (12) interspaces immaculate except for tiny dark brown flecks in some specimens; accessory blotches absent; (13) venter cream to same color as interspaces with or without pattern of broken lines interrupting interspaces; (14) ventrals 182– 198 in males, 189–201 in females; (15) subcaudals 85–91 in males, 79–98 in females (16) maxillary teeth 16–18 (HARVEY & EMBERT 2008: 74). 
CommentHabitat: fully arboreal (Harrington et al. 2018). 
References
  • Harrington, Sean M; Jordyn M de Haan, Lindsey Shapiro, Sara Ruane 2018. Habits and characteristics of arboreal snakes worldwide: arboreality constrains body size but does not affect lineage diversification. Biological Journal of the Linnean Society 125 (1): 61–71 - get paper here
  • Harvey, Michael B. 2008. New and Poorly Known Dipsas (Serpentes: Colubridae) from Northern South America. Herpetologica 64 (4): 422-451 - get paper here
  • Harvey, Michael B. and Dirk Embert 2008. Review of Bolivian Dipsas (Serpentes: Colubridae), with Comments on Other South American Species. Herpetological Monographs 22 (1): 54-105 - get paper here
  • Harvey, Michael B.; Gilson Rivas Fuenmayor, José Rances Caicedo-Portilla, and José Vicente Rueda-Almonacid 2009. Systematics of the Enigmatic Dipsadine Snake Tropidodipsas perijanensis Alemán (Serpentes: Colubridae) and Review of Morphological Characters of Dipsadini. Herpetological Monographs 22 (1): 106-132 - get paper here
  • Reynolds, R.P. & Foster,M.S. 1992. Four new species of frogs and one new species of snake from the Chapare region of Bolivia, with notes on other species. Herpetological Monographs 6: 83-104 - 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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