Rhadinella hannsteini (STUART, 1949)

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Higher Taxa	Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Hannstein's Spot-lipped Snake S: Lagartijerita Labio-manchdao
Synonym	Trimetopon hannsteini STUART 1949: 165 Trimetopon hannsteini — STUART 1963 Trimetopon hannsteini — PETERS & OREJAS-MIRANDA 1970: 308 Rhadinaea hannsteini — MYERS 1974: 130 Rhadinaea hannsteini — VILLA et al. 1988 Rhadinaea hannsteini — LINER 1994 Rhadinaea hannsteini — LINER 2007 Rhadinella hannsteini — MYERS 2011 Rhadinella hannsteini — WALLACH et al. 2014: 642
Distribution	SE Mexico (Chiapas), Guatemala Type locality: Finca La Paz, 1450 meters elevation, 18 kilometers (airline) due north of Coatepeque, Departamento de San Marcos, Guatemala.
Reproduction	oviparous
Types	Holotype: UMMZ 98756
Diagnosis	Diagnosis: Rhadinaea hannsteini is a small brownish snake with a pale, broken neck-ring, a dark vertebral line, and several additional lines or stripes on each side. It has 17 scale rows and thus differs from related species characterized by 19 or 21 rows, and the several well-defined dark lines distinguish it from several small species that have a pale collar but no dark lateral lines. Rhadinaea hannsteini can be distinguished from the remaining members of the godmani group (R. kinkelini, R. lachrymans, R. pinicola) in having only one postocular, rather than two, and in details of color pattern. The species is most likely to be confused with R. kinkelini (q.u.) and, although the number of postoculars separates all specimens examined, close attention should be given to the illustrations of heads and body patterns; in addition to the slight differences in body striping, it will be noted that hannsteini lacks large pale areas on the frontal plate, whereas such markings are characteristic of kinkelini and some other members of the godmani group. (Myers 1974: 130) Additional details (3348 characters) are available for collaborators and contributors. Please contact us for details.
Comment	Not mentioned in Campbell 1999 (Guatemala).
Etymology	Named after Walter Bernhard Hannstein (b. 1902), a German whose father emigrated to Guatemala (1892). In the 1940s he bought a coffee plantation, Finca La Paz, which is still owned and managed by his descendants (fide Beolens et al. 2011).
References	Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp 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 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 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. 1949. A new Trimetopon (Ophidia) from Guatemala. Proc. Biol. Soc. Washington 62: 165-168 - get paper here Stuart, L.C. 1963. A checklist of the herpetofauna of Guatemala. Misc. Publ. Mus. Zool., Univ. Michigan (No. 122): 1-150 - 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/412060751018529/ Google images

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