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Sibon dimidiatus (GÜNTHER, 1872)

IUCN Red List - Sibon dimidiatus - Least Concern, LC
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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Slender Snail Sucker
S: Caracolera Cordel Negro 
SynonymLeptognathus dimidiatus GÜNTHER 1872
Leptognathus pictiventris COPE 1876
Petalognathus multifasciatus BOCOURT 1884: 139
Leptognathus dimidiatus — GARMAN 1884: 14
Mesopeltis multifasciatus — COPE 1885: 172
Leptognathus (Asthenognathus) grandoculis MÜLLER 1887 (fide KOFRON)
Mesopeltis dimidiata — GÜNTHER 1894
Sibon dimidiata grandoculis — PETERS & OREJAS-MIRANDA 1970
Sibon dimidiatus — LINER 1994
Sibon nebulatus grandiocularis — GARRETT 1997
Sibon dimidiatus — WILSON & MCCRANIE 2002
Sibon dimidiatus — WALLACH et al. 2014: 667
Sibon dimidiatus — MATA-SILVA et al. 2015
Sibon dimidiatus — SUNYER & MARTÍNEZ-FONSECA 2023 
DistributionS Mexico (Chiapas, Oaxaca, Veracruz, Puebla), Guatemala, Belize, El Salvador, Honduras (elevation 950-1600 m), Nicaragua, Costa Rica

Type locality: México  
Reproductionoviparous 
TypesHolotype: BMNH 1946.1.20.97, female.
Holotype: USNM 30657 [Leptognathus pictiventris] 
DiagnosisAdditional details, e.g. a detailed description or comparisons (74 characters), are available for collaborators and contributors. Please contact us for details. 
CommentSynonymy partly after KOFRON 1990.

Habitat: fully arboreal (Harrington et al. 2018). 
EtymologySingular masculine nominative from the Latin “dīmidiō”, meaning halved or divided in a half. Likely in reference to some attribute that is divided in this species but it cannot be inferred with certainty from the original description. 
References
  • Aguilar-López JL, Luría-Manzano R, Pineda E, Canseco-Márquez L 2021. Selva Zoque, Mexico: an important Mesoamerican tropical region for reptile species diversity and conservation. ZooKeys 1054: 127-153 - get paper here
  • Bocourt,M.F. 1884. Note sur quelques ophidiens nouveaux, provenant de l'Amerique inter-tropicale. Bull. Soc. Philomath. Paris (7) 8: 133-142 - get paper here
  • Campbell, J.A. 1998. Amphibians and reptiles of northern Guatemala, the Yucatán, and Belize. Norman: University of Oklahoma Press, xiii + 380 pp. - get paper here
  • Casas-Andreu, G., F.R. Méndez-De la Cruz and X. Aguilar-Miguel. 2004. Anfibios y Reptiles; pp. 375–390, in A.J.M. García-Mendoza, J. Ordoñez and M. Briones-Salas (ed.). Biodiversidad de Oaxaca. Instituto de Biología, UNAM-Fondo Oaxaqueño para la Conservación de la Naturaleza-World Wildlife Fund, México, D. F.
  • Contreras-Calvario, Á. I., N. M. Cerón-De la Luz, Roberto Mora-Gallardo, and Víctor H. Jiménez-Arcos. 2017. Sibon dimidiatus (Günther, 1872). 2017. Sibon dimidiatus (Günther, 1872). Mexico, Veracruz. Mesoamerican Herpetology 4(3): 677–678.–679 - get paper here
  • Cope, E.D. 1875. On the Batrachia and Reptilia of Costa Rica with notes on the herpetology and ichthyology of Nicaragua and Peru. Journal of the Academy of Natural Sciences of Philadelphia N.S. (2) 8: 93-183 [sometimes said to be published 1876 but see Murphy et al. 2007 for clarification]] - get paper here
  • Cope, E.D. 1885. Twelfth contribution to the herpetology of tropical America. Proc. Amer. Philos. Soc. 22: 167-194 [1884] - get paper here
  • ESPINAL, MARIO ROBERTO; JOSÉ MARIO SOLÍS, JOSÉ MANUEL MORA. 2021. First record of Sibon dimidiatus (Günther, 1872) for the department of La Paz, south-western Honduras (Squamata: Dipsadidae). Herpetology Notes 14: 99-102. - get paper here
  • García-Padilla, E., Mata-Silva, V., Villalobos-Juárez, I., López-Esquivel, E. A., Lavariega, M. C., Rocha, A., DeSantis, D. L., Melgar-Martínez, A. I., Johnson, J. D., Fucsko, L. A., Lazcano, D., & Wilson, L. D. 2022. Anfibios y reptiles de la región de los Chimalapas, Istmo de Tehuantepec, Oaxaca, México:: composición, categorización distribucional, estado de conservación y significado para la biodiversidad. Biología Y Sociedad, 5(10), 37–76 - get paper here
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  • 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
  • Gutsche, A. 2012. Bewohner des Elfenwaldes: Herpetofauna am Pico La Picucha im Nationalpark Sierra de Agalta, Honduras. Terraria-Elaphe 2012 (5): 68-71 - 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
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • Hofmann, Erich P. 2016. Geographic Distribution: Sibon dimidiatus (Slender Snail Sucker). Herpetological Review 47 (1): 84 - get paper here
  • Jansen, M. & G. Koehler 2002. Biogeographische Analyse der Herpetofauna von ausgewählten Hochlandgebieten Nicaraguas. Salamandra 38 (4): 269-286 - get paper here
  • Johnson, Jerry D.; Vicente Mata-Silva, Elí García Padilla, and Larry David Wilson 2015. The Herpetofauna of Chiapas, Mexico: composition, distribution, and conservation. Mesoamerican Herpetology 2 (3): 272–329. - 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
  • Laking AE, Solís JM, Brown T, Maddock ST, Burdekin O, Taylor P, Lonsdale G, Green SEW, Martin TE, Galdamez JR, Kolby JE, Erens J, Jocque M 2024. The amphibians and reptiles of Cusuco National Park, Northwest Honduras: updates from a long-term conservation programme. In: Lipińska M, Lopez-Selva MM, Sierra JM (Eds) Biodiversity research in Central America. Neotropical Biology and Conservation 19(2): 37-62 - get paper here
  • Lee, J. C. 2000. A field guide to the amphibians and reptiles of the Maya world. Cornell University Press, Ithaca,
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  • 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
  • Mata-Silva, Vicente, Jerry D. Johnson, Larry David Wilson and Elí García-Padilla. 2015. The herpetofauna of Oaxaca, Mexico: composition, physiographic distribution, and conservation status. Mesoamerican Herpetology 2 (1): 6–62 - get paper here
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  • 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
  • Morán, Emanuel S., Vladlen Henríquez, Eli Greenbaum, José Gabriel Cerén López and Ana María Rivera. 2015. Geographic Distribution: Sibon dimidiatus (slender snail sucker). Herpetological Review 46 (4): 576 - get paper here
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  • Torres-Hernández, LA, Ramírez-Bautista A, Cruz-Elizalde R, Hernández-Salinas U, Berriozabal-Islas C, DeSantis DL, Johnson JD, Rocha A, García-Padilla E, Mata-Silva V, Fucsko LA, and Wilson LD. 2021. The herpetofauna of Veracruz, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 15(2) [General Section]: 72–155 - get paper here
  • Townsend, J. H., L. D. Wilson, M. Medina-Flores, E. Aguilar-Urbina, B. K. Atkinson et al. 2012. A premontane hotspot for herpetological endemism on the windward side of Refugio de Vida Silvestre Texíguat, Honduras. Salamandra 48 (2): 92-114 - get paper here
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