Abstract
A new species of snake of the genus Salvadora from Oaxaca, Mexico, is described. This taxon was confused with S. intermedia in previous taxonomic descriptions. It is characterized by lacking a pale vertebral stripe and by having incomplete dorsolateral stripes that do not reach the posterior part of the body, which is typical of congeners; by having both dorsolateral stripes separated each other by five to six scale rows on anterior part of body; and other scalation characters as well as the number maxillary teeth. The importance of this snake and its conservation is discussed.
References
Amaral, A.D. (1927) Studies of neotropical ophidia VI. A new genus of snakes from Honduras. Bulletin of the Antivenin Institute of America, 1, 28–29.
Arevalo, E., Davis, S.K. & Sites, J.W.J. (1994) Mitochondrial DNA sequence divergence and phylogenetic relationships among eight chromosome races of the Sceloporus grammicus complex (Phrynosomatidae) in central Mexico. Systematic Biology, 43, 387–418.
https://doi.org/10.1093/sysbio/43.3.387
Baird, S.F. & Girard, C. (1853) Catalogue of North American Reptiles in the Museum of the Smithsonian Institution. Part 1 Serpents, Smithsonian Institution, 172 pp.
Beaupre, S.J. (2004) Guidelines for Use of Live Amphibians and Reptiles in Field and Laboratory Research, 2nd edition. American Society of Ichthyologists and Herpetologists, 43 pp.
Blanchard, F.N. (1924) A key to the snakes of the United States, Canada and Lower California. Papers of the Michigan Academy of Science, Arts and Letters, 4, 1–115.
Bogert, C.M. (1939a) A Study of the Genus Salvadora, the Patch–nosed Snakes. Publication of the University of California at Los Angeles in Biological Sciences, 1, 177–236.
Bogert, C.M. (1939b) Notes on snakes of the genus Salvadora with a redescription of a neglected Mexican species. Copeia, 1939, 140–147.
https://doi.org/10.2307/1436808
Bogert, C.M. (1945) Two Additional Races of the Patch-nosed Snake, Salvadora hexalepis. American Museum Novitates, 1285, 1–14.
Bogert, C.M. (1947) The status of the genus Leptodrymus Amaral, with comments on modifications of colubrid pre–maxillae. American Museum Novitates, 1352, 1–14.
Bonfield, J.K., Smith, K.F. & Staden, R. (1995) A new DNA sequence assembly program. Nucleic Acids Res, 23, 4992–4999.
https://doi.org/10.1093/nar/23.24.4992
Campbell, J.A. (2015) A new species of Rhadinella (Serpentes: Colubridae) from the Pacific versant of Oaxaca, Mexico. Zootaxa, 3918 (3), 397–405.
https://doi.org/10.11646/zootaxa.3918.3.3
Campbell, J.A., Solano-Zavaleta, I., Flores-Villela, O., Caviedes-Solis, I.W. & Frost, D.R. (2016) A New Species of Abronia (Squamata: Anguidae) from the Sierra Madre del Sur of Oaxaca, México. Journal of Herpetology, 50 (1), 149–156.
https://doi.org/10.1670/14-162
Canseco-Márquez. L., Gutiérrez-Mayén, M.G. & Mendoza-Hernández, A.A. (2008) A new species of night lizard of Lepidophyma (Squamata: Xantusiidae) from Cuicatlán Valley, Oaxaca, México. Zootaxa, 1750, 59–67.
Caviedes-Solis, I.W., Vázquez-Vega, L.F., Solano-Zavaleta, I., Pérez-Ramos, E., Rovito, S.M., Devitt, T.J., Heimes, P., Flores-Villela, O.A., Campbell, J.A. & Nieto Montes de Oca, A. (2015) Everything is not lost: recent records, rediscoveries, and range extensions of Mexican frogs. Mesoamerican. Herpetology, 2, 230–241.
Cope, E.D. (1860), Catalogue of the Colubridae in the Museum of the Academy of Natural Sciences of Philadelphia. Part 3. Proceedingsof the Academy Natural Sciences Philadelphia, 12,553–566.
Dowling, H.G. (1951) A proposed standard system of counting ventrals in snakes. British Journal Herpetology, 1, 97–99.
Edgar, R.C. (2004) Muscle: Multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Research, 32, 1792–1797.
https://doi.org/10.1093/nar/gkh340
Figueroa, A., McKelvy, A.D., Grismer, L.L., Bell, C.D. & Lailvaux, S.P. (2016) A species level phylogeny of extant snakes with description of a new colubrid subfamily and genus. PloS ONE, (9), 11, 1–31.
https://doi.org/10.1371/journal.pone.0161070
Flores-Villela, O. (1993) Herpetofauna Mexicana. Special Publication Carnegie Museum of Natural History, 17, 1–73.
Flores-Villela, O. & Gerez, P. (1994) Conservación en México, vertebrados, vegetación y uso del suelo 2nd ed. CONABIO-UNAM, Mexico, 439 pp.
Frost, D.R. & Hillis, D.M. (1990) Species in concept and practice: herpetological applications. Herpetologica, 46, 87–104.
García-Mendoza, A.J., Ordoñez-Díaz, M.J. & Briones-Salas, M. (2004) Biodiversidad de Oaxaca. Instituto de Biología, UNAM, Fondo Oaxaqueño para la Conservación de la Naturaleza and World Wildlife Found. Mexico, 605 pp.
Günther, A. (1863) Third account of the snakes in the collection of the British Musem. Annals and Magazine of Natural History, (3), 12, 348–365.
https://doi.org/10.1080/00222936308681536
Harvey, M.B., Barker, D.G., Ammerman, L.K. & Chippindale, P.T. (2000) Systematics of the pythons of the Morelia amethistina complex (Serpentes:Boidae) with the description of three new species. Herpetological Monographs, 2000, 139–185.
https://doi.org/10.2307/1467047
Köhler, G., Gómez-Trejo-Pérez, R., Petersen, C.B.P. & Méndez de la Cruz, F. (2014) A new species of pine anole from the Sierra Madre del Sur in Oaxaca, Mexico (Reptilia: Squamata: Dactyloidae: Anolis). Zootaxa, 3753, 453–468.
https://doi.org/10.11646/zootaxa.3753.5.4
López-Ferrari, A.R. & Espejo-Serna, A. (2009) Nuevas combinaciones en monocotiledóneas mexicanas IV (Bromeliaceae, Orchidaceae). Acta Botanica Mexicana, 89, 43–46.
López-Ferrari, A.R. & Espejo-Serna, A. (2014) Hechtia rubicunda (Bromeliaceae; Hechtioideae), una nueva especie de Oaxaca, México. Acta Botanica Mexicana, 107, 153–164.
https://doi.org/10.21829/abm107.2014.205
López-Ferrari, A.R., Espejo-Serna, A., Ceja-Romero J. & Mendoza-Ruiz. A. (2011) Aechmea aenigmatica (Bromeliaceae; Bromelioideae) una nueva especie del estado de Oaxaca, México. Acta Botanica Mexicana, 95, 1–9.
https://doi.org/10.21829/abm95.2011.262
Mata-Silva, V., Johnson, J.D., Wilson, L.D. & García-Padilla, E. (2015) The herpetofauna of Oaxaca, Mexico: composition, physiographic distribution and conservation status. Mesoamerican Herpetolology, 2, 6–62.
Morón, M.A. & Nogueira, G. (2012) Phyllophaga (Phyllophaga) josepalaciosi (Coleoptera: Melolonthidae: Melolonthinae) nueva especie del sur de Oaxaca, México. Dugesiana, 19, 69–72.
Ochoa-Ochoa, L. & Flores-Villela, O. (2006) Areas de diversidad y endemismo de la herpetofauna Mexicana. UNAM-CONABIO, Mexico, 211 pp.
Pyron, R.A., Burbrink, F.T., Colli, G.R., Nieto-Montes de Oca, A., Vitt, L.J., Kuczynski, C.A. & Wiens, J.J. (2011) The phylogeny of advanced snakes (Colubroidea), with discovery of a new subfamily and comparison of support methods for likelihood trees. Molecular Phylogenetics Evolution, 58, 329–34.
https://doi.org/10.1016/j.ympev.2010.11.006
Pyron, R.A., Burbrink, F.T. & Wiens, J.J. (2013) A phylogeny and revised classification of Squamata, including 4161 species of lizards and snakes. BMC Evolutionary Biology, 13, 1–93.
https://doi.org/10.1186/1471-2148-13-93
Sabaj-Perez, M.H. (2013) Standard symbolic codes for institutional resource collections in herpetology and ichthyology: An online reference (v4.0). American Society of Ichthyologists and Herpetologists, Washington, DC. Available from: http://www.asih.org/resources. (accessed 31 August 2015)
Schmidt, K.P. (1940) Notes on Texan snakes of the genus Salvadora. Zoological Series. Field Museum of Natural History Zoological Series, 24, 143–150.
Smith H.M. (1938) Notes of the snakes of the genus Salvadora. The University of Kansas Science Bulletin, 25, 229–237.
https://doi.org/10.5962/bhl.part.1701
Smith, H.M. (1941) Further Notes on Mexican Snakes of the Genus Salvadora. Smithsonian Miscellaneus Collections, 99, 1–12.
Smith, H.M. & Smith, R.B. (1976) Synopsis of the herpetofauna of Mexico, Vol. III. Source analysis and index for Mexican reptiles. John Johnson, 997 pp.
Smithe, F.B. (1975) Naturalist Color Guide. American Museum of Natural History, New York, 229 pp.
Stejneger, L. (1902) The reptiles of the Huachuca Mountains, Arizona. Proceedings of the United States National Museum, 25, 149–158.
https://doi.org/10.5479/si.00963801.1282.149
Stuart, L.C. (1932) Studies on neotropical Colubrinae. I. The taxonomic status of the genus Drymobius Fitzinger. Occasional Papers Museum of Zoology University Of Michigan, 236, 1–16.
Tamura, K., Peterson, D., Stecher, G., Nei, M. & Kumar, S. (2011) MEGA5: Molecular evolutionary genetics analysis using likelihood, evolutionary distance and maximum parsimony methods. Molecular Biology and Evolution, 28, 2731–3739.
https://doi.org/10.1093/molbev/msr121
Tonini, J.F.R., Beard, K.H., Ferreira, R.B., Jetz, W. & Pyron, R.A. (2016) Fully-sampled phylogenies of squamates reveal evolutionary patterns in threat status. Biological Conservation, 204, 23-31.
https://doi.org/10.1016/j.biocon.2016.03.039
Wallach, V., Williams, K.L. & Boundy, J. (2014) Snakes of the world, a catalogue of living and extinct species. CRC Press, Boca Raton, Florida, 1209 pp.
https://doi.org/10.1201/b16901
Woller, D.A., Fontana, P., Marino-Perez, R. & Song, H. (2014) Studies in Mexican Grasshoppers: Liladownsia fraile, a new genus and species of Dactylotini (Acrididae: Melanoplinae) and an updated molecular phylogeny of Melanoplinae. Zootaxa, 3793 (4), 475–495.
https://doi.org/10.11646/zootaxa.3793.4.6
Zheng, Y. & Wiens, J.J. (2016) Combining phylogenomic and supermatrix approaches, and a time-calibrated phylogeny for squamate reptiles (lizards and snakes) based on 52 genes and 4162 species. Molecular phylogenetics and evolution, 94, 537–547.
https://doi.org/10.1016/j.ympev.2015.10.009