Rhadinella pilonaorum (STUART, 1954)

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Higher Taxa	Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Stuart's Graceful Brown Snake
Synonym	Trimetopon pilonaorum STUART 1954 Trimetopon posadasi — MERTENS 1952: 77 (nec SLEVIN; fide VILLA et al. 1988) Rhadinaea pilonaorum — MYERS 1974 Rhadinaea pilonaorum — VILLA et al. 1988 Rhadinella pilonaorum — MYERS 2011 Rhadinella pilonaorum — WALLACH et al. 2014: 643
Distribution	Guatemala, El Salvador Type locality: “Finca La Gloria (about 12 kilometers [straight line] northeast of Chiquimulilla), Department of Santa Rosa, Guatemala at about 950 meters” [= Finca La Gloria, N Santa Rosa Dept., SE Guatemala, 14°05’N, 90°23’W, elevation 950 m].
Reproduction	oviparous
Types	Holotype: UMMZ 102635, female
Diagnosis	Diagnosis: This is a small, very slender, long-tailed Rhadinaea; there is an indication of a dark line on the vertebral scales, but the other dorsal scales have pale streaks on their centers. The body coloration is similar to that of R. posadasi and the shorter tailed R. schistosa. Rhadinaea pilonaorum is easily distinguished from the aforesaid species, and from all other of its congeners, in having a brown-mottled white head. No other species of Rhadinea has a basically white head, although a dark body and white head is characteristic of occasional species of small snakes in other genera (including Enulius, Geophis, Tantilla, and Trimetopon). (Myers 1974: 145) 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 about 1.54 pages) are available for collaborators and contributors. Please contact us if you need any of this material.
Comment	Distribution: see map in ARIANO-SÁNCHEZ & CAMPBELL 2018: 342 (Fig. 3).
Etymology	Named after Antonio and Marta Pilona, who lived on, and Antonio was administrator of Finca La Gloria, a coffee plantation in Guatemala where Stuart had been a guest. Antonio obtained the holotype.
References	Ariano-Sánchez, D. y J. Campbell. 2018. A new species of Rhadinella (Serpentes: Dipsadidae) from the dry forest of Motagua Valley, Guatemala. Zootaxa 4442 (2): 338-344 - 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 CAMPBELL, JONATHAN A. 2015. A new species of Rhadinella (Serpentes: Colubridae) from the Pacific versant of Oaxaca, Mexico. Zootaxa 3918 (3): 397–405 - get paper here Köhler, G. 2008. Reptiles of Central America. 2nd Ed. Herpeton-Verlag, 400 pp. 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 Myers, Charles W. 2011. A New Genus and New Tribe for Enicognathus melanauchen Jan, 1863, a Neglected South American Snake (Colubridae: Xenodontinae), with Taxonomic Notes on Some Dipsadinae. American Museum Novitates (3715): 1-33 - get paper here Stuart,L.C. 1954. Descriptions of some new amphibians and reptiles from Guatemala. Proc. Biol. Soc. Washington 67: 159-178. - 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 https://www.facebook.com/groups/stshc/posts/412404144317523/ Google images

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