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Tretanorhinus mocquardi BOCOURT, 1891

IUCN Red List - Tretanorhinus mocquardi - Data Deficient, DD
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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Mocquard's Swamp Snake 
SynonymTretanorhinus mocquardi BOCOURT 1891: 122
Tretanorhinus mocquardi — BOULENGER 1893: 283
Tetranorhinus mocquardi — AMARAL 1925 (in error)
Tretanorhinus mocquardi — DUNN 1939: 214
Tretanorhinus mocquardi — PETERS & OREJAS-MIRANDA 1970: 307
Tretanorhinus mocquardi — VILLA et al. 1988: 82
Tretanorhinus mocquardi — WALLACH et al. 2014: 735 
DistributionPanama, Ecuador, Colombia (Chocó)

Type locality: Panama  
Reproductionoviparous 
TypesSyntypes: MNHN-RA 1889.0476, MNHN-RA 1889.0477, MNHN-RA 1889.0478, MNHN-RA 1889.0480, MNHN-RA 1889.0481 (total of 6 syntypes and one of them was given to ANSP collections. ANSP 11656 (this specimen was the former MNHN-RA 1889.0479). Other specimens: MCZ, AMNH, FMNH USNM, ERD, ANS (fide Dunn 1939), MHUA (Colombia, fide Vásquez-Restrepo 2020). 
DiagnosisDiagnosis: Markings consist of stripes; 19 scale rows; one prefrontal (two exceptions with two prefrontals); ventrals in males 166-169; ventrals
in females 168-177; caudals in males 78-85; caudals in females 69-74 (Dunn 1939).


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CommentSimilar species: T. taeniatus

Synonymy: T. mocquardi was considered a synonym of T. nigroluteus by some earlier authors (e.g. Barbour and Amaral 1924; Amaral 1929).

Dunn 1939 mentions that he has “seen three of the five types and nine additional specimens. I know of no others.” 
EtymologyNamed after François Mocquard (1834-1917), French herpetologist. 
References
  • Almendariz, A. 1991. Anfibios y Reptiles [del Ecuador]. Rev. Politecnica. XVI (3): 89-162.
  • Amaral, A. do 1925. South American snakes in the collection of the United States National Museum. Proc. US Natl. Mus. 67 (24): 1-30 - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Bernal, R. 2025. Serpientes de Colombia-Guía de Campo. Serie de Guías Tropicales de Campo. 19: 396 pp. Conservación Internacional Colombia, Bogotá - get paper here
  • Bocourt, M. F 1891. Sur quelques ophidiens de l’Amerique intertropicale. Le Naturaliste (2) 5: 121-122 - get paper here
  • Boulenger, G.A. 1893. Catalogue of the snakes in the British Museum (Nat. Hist.) I. London (Taylor & Francis), 448 pp. - get paper here
  • Dunn,E.R. 1939. Mainland forms of the snake genus Tretanorhinus Cope. Copeia 1939 (4): 212-217. - get paper here
  • Ray, Julie M. and Patty Ruback 2015. Updated checklists of snakes for the provinces of Panamá and Panamá Oeste, Republic of Panama. Mesoamerican Herpetology 2 (2): 168-188 - get paper here
  • Smith, H.M. 1958. Handlist of the snakes of Panamá. Herpetologica 14: 222-224. - get paper here
  • Torres-Carvajal O, Pazmiño-Otamendi G, Salazar-Valenzuela D. 2019. Reptiles of Ecuador: a resource-rich portal, with a dynamic checklist and photographic guides. Amphibian & Reptile Conservation 13 (1): [General Section]: 209–229 (e178) - get paper here
  • Vásquez-Restrepo, Juan D. 2020. Validating the Two Records of Mocquard’s Swampsnake, Tretanorhinus mocquardi Bocourt 1891 (Dipsadidae), in Colombia, with Comments on the Taxonomy of Mainland Swampsnakes. IRCF Reptiles & Amphibians 27 (2): 314-317 - get paper here
  • Villa, J., Wilson, L.D., Johnson, J.D. 1988. Middle American Herpetology - A Bibliographic Checklist. University of Missouri Press, 132 pp [review in Copeia 1989 (3): 802]
  • 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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