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Sibon annulatus (GÜNTHER, 1872)

IUCN Red List - Sibon annulatus - Least Concern, LC

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Ringed Snail Sucker 
SynonymLeptognathus annulata GÜNTHER 1872: 30 (non Coluber annulatus LINNAEUS 1758)
Dipsas annulata — TAYLOR 1951
Sibon annulata — PETERS & OREJAS-MIRANDA 1970
Sibon annulata — VILLA et al. 1988
Sibon annulatus — MCCRANIE et al. 2003
Sibon annulatus — WALLACH et al. 2014: 666
Sibon annulatus — JARAMILLO-MARTINEZ et al. 2022 
DistributionCosta Rica, Panama, Nicaragua [HR 29: 249], Honduras, 600 m elevation, Colombia, Ecuador

Type locality: "from the elevated country of Costa Rica, near Cartago."  
TypesHolotype: BMNH 1871.11.22.14 
CommentSynonymized with S. dimidiata by KOFRON 1990 (but not followed by other authors).

Habitat: fully arboreal (Harrington et al. 2018). 
EtymologyNamed after the diminutive form (“annul-”) of Latin “anus” = ring. 
  • Arteaga, A., & Batista, A. 2023.  A consolidated phylogeny of snail-eating snakes (Serpentes, Dipsadini), with the description of five new species from Colombia, Ecuador, and Panama. ZooKeys, 1143: 1-49 - get paper here
  • Carvajal-Cogollo, J.E.; L.E. Rojas-Murcia. & G. Cárdenas-Arévalo 2020. Reptiles del Caribe colombiano/ Reptiles of the Colombian Caribbean. Tunja: Editorial UPTC, 268 pp. - get paper here
  • David, Gabriel; Todd R. Lewis. 2011. Hatching neonates of Sibon annulatus (Günther, 1872) in a Manicaria swamp forest, Costa Rica. Herpetology Notes 4: 269. - get paper here
  • Günther,A. 1872. Seventh account of new species of snakes in the collection of the British Museum. Ann. Mag. Nat. Hist. (4) 9: 13-37 - get paper here
  • 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.; 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
  • Jaramillo-Martinez, A. F., Hernandez-Cordoba, O., & Valencia-Zuleta, A. 2022. Filling distribution gap on Sibon annulatus and S. ayerbeorum (Serpentes: Dipsadidae) in Colombia. Phyllomedusa 21(2): 225-233 - get paper here
  • Kofron, C.P. 1985. Systematics of the neotropical gastropod-eating snake genera Tropidodipsas and Sibon. Journal of Herpetology 19 (1): 84-92. - get paper here
  • Kofron, C.P. 1990. Systematics of Neotropical gastropod-eating snakes: the dimidiata group of the genus Sibon, with comments on the nebulata group. Amphibia-Reptilia 11: 207-223 - get paper here
  • Köhler, G. 2008. Reptiles of Central America. 2nd Ed. Herpeton-Verlag, 400 pp.
  • Köhler, Gunther, Sebastian Lotzkat and Andreas Hertz. 2010. A new species of Sibon (Squamata: Colubridae) from western Panama. Herpetologica 66 (1): 80-85 - get paper here
  • Köhler, Gunther;Seipp, Robert 1998. Geographic distribution. Sibon annulatus. Herpetological Review 29 (4): 249 - get paper here
  • Kunz, Kriton 2015. Schlangen, die Wirbellose fressen. Terraria-Elaphe 2015 (5): 14-20 - get paper here
  • Lewis, T.R., David, G., Grant, P.B.C., LaDuke, T.C. & Ryall, C. 2010. Sibon annulatus (ringed snail-eater). Maximum size. Herpetological Review 41 (1): 98
  • Lewis, Todd R.; Rowland K. Griffin, Paul B. C. Grant, Alex Figueroa, Julie M. Ray, Kirsty E. Graham, and Gabriel David 2013. Morphology and ecology of Sibon snakes (Squamata: Dipsadidae) from two Neotropical forests in Mesoamerica. Phyllomedusa 12 (1): 47-55 - get paper here
  • Lotzkat, S.; A. Hertz; G. Köhler. 2012. A new species of Sibon (Squamata: Colubroidea: Dipsadidae) from the Cordillera Central of western Panama, with comments on other species of the genus in the area. Zootaxa 3485: 26–40 - get paper here
  • McCranie J R 2011. The snakes of Honduras. SSAR, Salt Lake City, 725 pp.
  • McCranie, J.R. 2007. A second new species of Sibon (Squamata: Colubridae) from La Mosquitia, Northeastern Honduras. Herpetologica 63 (2): 213-218 - get paper here
  • McCranie, J.R.; Townsend, J.H. & Wilson, L.D. 2003. Three snakes new to the herpetofauna of Honduras. Herpetological Review 34 (4): 391-392 - get paper here
  • McCranie, James R. 2006. New species of Sibon (Squamata: Colubridae) from Northeastern Honduras. Journal of Herpetology 40 (1): 16-21 - get paper here
  • McCranie, James R. 2015. A checklist of the amphibians and reptiles of Honduras, with additions, comments on taxonomy, some recent taxonomic decisions, and areas of further studies needed. Zootaxa 3931 (3): 352–386 - get paper here
  • Meneses-Pelayo, Elson; Jonard David Echavarría-Rentería, Juan David Bayona-Serrano, José Rances Caicedo-Portilla, Jhon Tailor Rengifo-Mosquera 2018. Sibon annulatus (Günther, 1872). Catálogo de Anfibios y Reptiles de Colombia 4 (3): 70-77 - get paper here
  • Meneses-Pelayo, Elson; Juan David Echavarría-Rentería, Jonard David Bayona-Serrano, José Rances Caicedo-Portilla, Jhon Tailor Rengifo-Mosquera 2016. New records and an update of the distribution of Sibon annulatus (Colubridae: Dipsadinae: Dipsadini) for Colombia. Check List 12 (4): 1931; DOI: - get paper here
  • Moreno-Arias, Rafael. 2010. Geographic distribution: Sibon annulatus. Herpetological Review 41 (3): 382 - get paper here
  • Peters , J. A. 1960. The snakes of the subfamily Dipsadinae. Misc. Publ. Mus. Zool., Univ. Michigan (114): 224 pp. - 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
  • Ray, Julie M.; Chad E. Montgomery, Heidi K. Mahon, Alan H. Savitzky, and Karen R. Lips 2012. Goo-Eaters: Diets of the Neotropical Snakes Dipsas and Sibon in Central Panama. Copeia 2012 (2): 197-202. - get paper here
  • Rovito, Sean Michael; Thomas James Devitt, Susan Cameron Devitt 2015. First survey of the amphibians and reptiles of the Nectandra Cloud Forest Reserve, Alajuela, Costa Rica. Check List 11 (2): 1570 - get paper here
  • Savage, J.M. 2002. The Amphibians and Reptiles of Costa Rica: A Herpetofauna Between Two Continents, Between Two Seas. University of Chicago Press, 934 pp. [review in Copeia 2003 (1): 205]
  • Solís, J. M., L. D. Wilson, and J. H. Townsend. 2014. An updated list of the amphibians and reptiles of Honduras, with comments on their nomenclature. Mesoamerican Herpetology 1: 123–144 - get paper here
  • Solorzano, A. 2004. Serpientes de Costa Rica - Snakes of Costa Rica. Editorial INBio, Costa Rica, 792 pp.
  • Sunyer, Javier 2014. An updated checklist of the amphibians and reptiles of Nicaragua. Mesoamerican Herpetology 1 (2): 186–202. - get paper here
  • Sunyer, Javier & José́ Gabriel Martínez-Fonseca 2023. An updated country checklist to the amphibians and reptiles of Nicaragua. REVISTA NICARAGÜENSE DE BIODIVERSIDAD (100): 1-25 - 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
  • VERA-PÉREZ, LUIS ENRIQUE 2019. A new species of Sibon Fitzinger, 1826 (Squamata: Colubridae) from Southwestern Colombia. Zootaxa 4701 (5): 443–453 - 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.
  • Zipkin, Elise F.; Graziella V. DiRenzo, Julie M. Ray, Sam Rossman, Karen R. Lips 2020. Tropical snake diversity collapses after widespread amphibian loss. Science 367: 814–816 - get paper here
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