Rhadinaea myersi ROSSMAN, 1965

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Higher Taxa	Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Myers' Graceful Brown Snake S: Hojarasquera de Myers
Synonym	Rhadinaea myersi ROSSMAN 1965 Rhadinaea myersi — MYERS 1974: 91 Rhadinaea myersi — LINER 1994 Rhadinaea myersi — LINER 2007 Rhadinaea myersi — WALLACH et al. 2014: 641
Distribution	Mexico (Guerrero, Oaxaca) Type locality: vicinity of Pluma Hidalgo and La Soledad in the Pacific slopes of the Sierra Madre del Sur in southern Oaxaca, Mexico.
Reproduction	oviparous
Types	Holotype: LSUM 7566, adult male
Diagnosis	DIAGNOSIS: Rhadinaea myersi, of the Pacific slopes of central Oaxaca, appears geographically isolated from other members of the decorata group. The white postocular line is only weakly diagonal and does not extend behind the corner of the mouth to the lower side of the neck, as in R. macdougalli, R. marcellae, and R. forbesi. The aforesaid white line normally terminates on the temporals, as in R. hesperia, which, however, has the lateral dark line on row 5 (row 4 in myersi) and many more subcaudals and ventrals (especially in the populations closest to the range of myersi). In color pattern, Rhadinaea myersi is close to R. bogertorum, which has considerably more ventrals; additional comparisons are given in the Remarks section under bogertorum. The hemipenis of Rhadinaea myersi is a useful diagnostic feature, as the capitulum is very small, comprising only about two-fifths the length of the organ on its sulcate side (usually about half the length in other species of the decorata group). (Myers 1974: 91) Unfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data. However, these details, e.g. detailed descriptions (about less than half a page) are available for collaborators and contributors. Please contact us if you need any of this material.
Comment	Group: Rhadinaea decorata group
Etymology	Named after Dr. Charles William Myers (b. 1936), American zoologist who graduated from the University of Florida (ca. 1960).
References	Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - 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. García-Vázquez UO, Pavón-Vázquez CJ, Blancas-Hernández JC, Blancas-Calva E, Centenero-Alcalá E 2018. A new rare species of the Rhadinaea decorata group from the Sierra Madre del Sur of Guerrero, Mexico (Squamata, Colubridae). ZooKeys 780: 137-154 - get paper here García-Vázquez, U.O.; Durán-Fuentes, I.; Nieto-Montes de Oca, A. & Smith, H.M. 2009. RHADINAEA MYERSI (SQUAMATA: COLUBRIDAE) IN GUERRERO AND OAXACA, MEXICO. Southwestern Naturalist 54(3):345–346 - get paper here Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp Lemos-Espinal, J. A., & Smith, G. R. 2025. The diversity and conservation status of amphibians and reptiles from the Mexican biogeographic province of Sierra Madre del Sur. Nature Conservation, 58: 101-127 - get paper here Liner, Ernest A. 2007. A CHECKLIST OF THE AMPHIBIANS AND REPTILES OF MEXICO. Louisiana State University Occasional Papers of the Museum of Natural Science 80: 1-60 - 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 Myers, C.W. 1974. The systematics of Rhadinaea (Colubridae), a genus of New World snakes. Bull. Amer. Mus. nat. Hist. 153 (1): 1-262 - get paper here Palacios-Aguilar, Ricardo & OSCAR FLORES-VILLELA 2018. An updated checklist of the herpetofauna from Guerrero, Mexico. Zootaxa 4422 (1): 1-24 - get paper here Rossman, Douglas A. 1965. Two new colubrid snakes of the genus Rhadinaea from southern Mexico. Occasional papers of the Museum of Zoology, Louisiana State University (32): 1-8 - 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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