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Chironius laurenti DIXON, WIEST & CEI, 1993

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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Common Names 
SynonymChironius dixoni WIEST 1978
Chironius laurenti DIXON, WIEST & CEI 1993: 141
Chironius laurenti — HOLLIS 2006
Chironius laurenti — WALLACH et al. 2014: 161 
DistributionBolivia (Beni, Cochabamba, and Santa Cruz),
Brazil (Mato Grosso, Acre)

Type locality: Bolivia, Department of Beni, Rio Mamore  
TypesHolotype: AMNH 101815. Paratypes: AMNH 6778, 101809-814, 101816-819, 101821, 104558; BMNH 1904.10.29.52; CM 2880, 2946-47; FNMH 35580,161509, MZUSP 6407, UMMZ
60744-45,60749,63922 (2 Specimen),64015, USNM 159787. 
DiagnosisDiagnosis: this is the only Chironius species with a combination of 12 scale rows at midbody, divided anal plate, 163-181 ventrals, immaculate yellowish subcaudals, dorsum brownish ,32-36 maxillary teeth, 2-10 scale rows in males and 2-6 scale rows in females keeled and a mottled ventrolateral pattern on posterior of body and tail [shortened after DIXON et al. 1993: 142].
CommentDistribution: Map in DIXON et al. 1993: 143.

Synonymy: Wiest published the description of C. dixoni in his PhD thesis, which was later published again in slighly modified form by Dixon et al. 1993. The holotypes of C. dixoni and C. laurenti are identical. Entiauspe-Neto & Loebmann 2019 argued that Wiest 1978 constitutes a proper publication and thus has priority over Dixon et al. 1993. 
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Dixon J R; Wiest J A Jr; Cei J M 1993. Revision of the Neotropical snake genus Chironius Fitzinger (Serpentes, Colubridae). MUSEO REGIONALE DI SCIENZE NATURALI MONOGRAFIE (TURIN) 13 :1-280
  • Entiauspe-Neto OM, Loebmann D 2019. Taxonomic status of Chironius laurenti Dixon, Wiest & Cei, 1993 and of the long- forgotten Chironius dixoni Wiest, 1978 (Squamata, Serpentes). Bionomina, 16: 83–87
  • Hollis, J.L. 2006. Phylogenetics of the genus Chironius Fitzinger 1826 (Serpenes, Colubridae) based on morphology. Herpetologica 62 (4): 435-452 - get paper here
  • Miranda, Daniele Bazzo; Nathocley Mendes Venâncio, Saymon de Albuquerque 2014. Rapid survey of the herpetofauna in an area of forest management in eastern Acre, Brazil. Check List 10 (4): 893-899 - get paper here
  • Torres-Carvajal, O., Echevarría, L.Y., Lobos, S.E., Venegas, P.J., Kok, P.J.R. 2018. Phylogeny, diversity and biogeography of Neotropical sipo snakes (Serpentes: Colubrinae: Chironius). Molecular Phylogenetics and Evolution 130: 315-329 - get paper here
  • Valencia, J. H., K. Garzón-Tello & M. E. Barragán-Paladines 2016. Serpientes venenosas del Ecuador: sistemática, taxonomía, historia natural, conservación, envenenamiento y aspectos antropológicos. Quito, Ecuador, Fundación Herpetológica Gustavo Orcés, Universidad de Texas, Fondo Ambiental Nacional, 652 pp. [review in HR 49 (1): 152, 2018]
  • 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.
  • Wiest, J. A., Jr. 1978. Revision of the Neotropical snake genus Chironius Fitzinger (Serpentes, Colubridae). PhD. dissertation, Texas A&M University: i–xv + 1–370
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