Trimetopon gracile (GÜNTHER, 1872)

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Higher Taxa	Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Günther's Tropical Ground Snake
Synonym	Ablabes gracilis GÜNTHER 1872: 18 Trimetopon gracile — COPE 1885: 177 Trimetopon gracile — DUNN 1930: 331 Trimetopon gracile — VILLA et al. 1988 Trimetopon gracile — SAVAGE 2002 Trimetopon gracile — WALLACH et al. 2014: 743
Distribution	Costa Rica Type locality: Cartago, Costa Rica
Reproduction	oviparous
Types	Syntypes: BMNH 71.11.22.19-20 (Holotype BMNH 71.11.22.19 - RR BMNH 1946.1.1.1); (Paratype BMNH 71.11.22.20 - RR BMNH 1946.1.1.2, One of the types of Trimetopon gracile) (No.71.11.22.20 = T. pliolepis fide C.W. Myers 1963)
Diagnosis	Additional details, e.g. a detailed description or comparisons (1922 characters), are available for collaborators and contributors. Please contact us for details.
Comment	Type species: Ablabes gracilis GÜNTHER 1872: 18 is the type species of the genus Trimetopon COPE 1885. Synonymy: Dunn 1930 included pliolepis as a synonym in gracile. Key: Dunn 1930 presented a key to the 3 species of Trimetopon he recognized (gracile including pliolepis, simile, and barbouri)
Etymology	Named after Latin gracile, slender, thin, slim. [“...Body and tail slender, subcylindrical; head narrow, not distinct from neck...”]. The genus was named after Greek tria (τρία), three + Greek metopon (μέτωπον), the space between the eyes, the brow, forehead. ["...Two internasals; one prefrontal plate…"].
References	Cope, E.D. 1885. Twelfth contribution to the herpetology of tropical America. Proc. Amer. Philos. Soc. 22: 167-194 [1884] - get paper here Dunn, E. R. 1930. New snakes from Costa Rica and Panamá. Occ. Pap. Boston Soc. Nat. Hist. 5: 329-332. 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 Köhler, G. 2008. Reptiles of Central America. 2nd Ed. Herpeton-Verlag, 400 pp. Sasa, M., Arias, E., & Chaves, G. 2025. Annotated list of amphibians and reptiles of Costa Rica: The role of the Museum of Zoology in cataloging the country’s herpetological diversity. Revista de Biología Tropical, 73(S2): e64536-e64536 - 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] Solorzano, A. 2004. Serpientes de Costa Rica - Snakes of Costa Rica. Editorial INBio, Costa Rica, 792 pp. Taylor,E.H. 1951. A brief review ot the snakes of Costa Rica. Univ. Kansas Sci. Bull. 34 (1): 3-188 - 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.
External links	IUCN Red List National Center for Biotechnology Information Google images

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