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Plestiodon bilineatus (TANNER, 1958)

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Higher TaxaScincidae, Scincinae, Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Two-lined Short-nosed Skink
S: Alicante de Dos Lineas 
SynonymEumeces brevirostris bilineatus TANNER 1958: 59
Eumeces brevirostris bilineatus — DIXON 1969
Eumeces brevirostris bilineatus — WEBB 1984
Plestiodon brevirostris bilineatus — GARCIA-VÁZQUEZ & FERIA-ORTIZ 2006
Eumeces brevirostris bilineatus — LEMOS-ESPINAL et al. 2004
Plestiodon brevirostris bilineatus — LINER 2007
Plestiodon bilineatus — FERIA-ORTIZ et al. 2011
Plestiodon brevirostris bilineatus — FERIA-ORTIZ & GARCÍA-VÁZQUEZ 2012
Plestiodon bilineatus — BRANDLEY et al. 2012
Plestiodon bilineatus — CRUZ-SÁENZ et al. 2017 
DistributionMexico (Chihuahua, Durango, Jalisco)

Type locality: 10 miles southwest of El Salto, Durango, Mexico  
Reproductionoviparous. 
TypesHolotype: KU No. 44732; Charles M. Fugler; June 28, 1955.
PARATYPES: KU. 44728 , 44730 , 44731, 9 miles southwest of El Salto, Durango, México; Charles M. Fugler and Robert G. Webb; June 2628, 1955. Nos. 44726 , 44729 , same locality as holotype; Rollin H . Baker and Robert G. Webb; June 25, 1955. No. 44727, 15 miles southwest of El Salto, Durango,
Mexico; Charles M. Fugler; June 25 , 1955. 
Diagnosis 
CommentSubspecies: FERIA-ORTIZ et al. 2011 provide evidence that P. b. brevirostris, P. b. bilineatus, P. b. dicei, and the eastern populations of P. b indubitus (from Morelos, Guerrero, and México) represent distinct species, whereas the western populations of P. b. indubitus (from Colima and Jalisco) represent an undescribed species. The data cannot resolve whether P. b. pineus is conspecific with P. b. dicei or P. b. dicei is a paraphyletic ( = nonexclusive) species relative to an exclusive P. b. pineus. Thus, the status of P. b. pineus remains uncertain. The haplotype phylogeny also suggests that P. b. brevirostris may represent more than one species. BRANDLEY et al. (2012) showed that bilineatus, dicei, and indubitus are paraphyletic with respect to other species and thus need to be split up. 
EtymologyFrom the Latin bilīneātus meaning doubly lined in allusion to its coloration. 
References
  • AHUMADA-CARRILLO, I. T., C. I. GRUNWALD, M. A. LOPEZ CUELLAR, AND J. M. JONES 2020. Some Records of Amphibians and Reptiles from the Wixarica Region in the State of Jalisco, Mexico. Herpetological Review 51: 277-281.
  • Bañuelos-Alamillo, Jorge A., Rubén A. Carbajal-Márquez and Gustavo E. Quintero-Díaz. 2016. Plestiodon bilineatus. Reproduction. Mesoamerican Herpetology 3 (3): 728–729 - get paper here
  • BRANDLEY, MATTHEW C.; OTA, HIDETOSHI; HIKIDA, TSUTOMU; NIETO MONTES DE OCA, ADRIAN; FERIA-ORTIZ, MANUEL; GUO, XIANGUANG; WANG, YUEZHAO 2012. The phylogenetic systematics of blue-tailed skinks (Plestiodon) and the family Scincidae. Zoological Journal of the Linnean Society 165 (1): 163-189 - get paper here
  • Bryson, R. W., Linkem, C. W., Pavón-Vázquez, C. J., Nieto-Montes de Oca, A., Klicka, J. and McCormack, J. E. 2017. A phylogenomic perspective on the biogeography of skinks in the Plestiodon brevirostris group inferred from target enrichment of ultraconserved elements. J. Biogeogr.. doi:10.1111/jbi.12989 - get paper here
  • Cruz-Sáenz, D., F. J. Muñoz-Nolasco, V. Mata-Silva, J. D. Johnson, E. García-Padilla, and L. D. Wilson. 2017. The herpetofauna of Jalisco, Mexico: composition, distribution, and conservation status. Mesoamerican Herpetology 4(1): 23–118 - get paper here
  • Dixon, J.R. 1969. Taxonomic review of the Mexican skinks of the Eumeces brevirostris group. Contributions in Science, Los Angeles County Museum (168): 30 pp. - get paper here
  • Feria-Ortiz, Manuel & Garcia-Vázquez, Uri Omar 2012. A new species of Plestiodon (Squamata: Scincidae) from Sierra Madre del Sur of Guerrero, México. Zootaxa 3339: 57–68 - get paper here
  • Feria-Ortiz, Manuel; Norma L. Manríquez-Morán, and Adrián Nieto-Montes de Oca 2011. Species Limits Based on mtDNA and Morphological Data in the Polytypic Species Plestiodon brevirostris (Squamata: Scincidae). Herpetological Monographs 25 (1): 25-51 - get paper here
  • Garcia-Vázquez, U. & Feria-Ortiz, M. 2006. Skinks of Mexico. Reptilia (GB) (49): 74-79 - get paper here
  • Garcia-Vázquez, U. & Feria-Ortiz, M. 2006. Scincidos de México. Reptilia (Spain) (62): 78-83
  • Lemos-Espinal JA, Smith GR, Gadsden-Esparza H, Valdez-Lares R, Woolrich-Piña GA 2018. Amphibians and reptiles of the state of Durango, Mexico, with comparisons with adjoining states. ZooKeys 748: 65-87 - get paper here
  • Lemos-Espinal, Julio A., David Chiszar, and Hobart M. Smith 2004. Selected Records of 2003 Lizards from Chihuahua and Sonora, Mexico. Bull. Chicago Herp. Soc. 39 (9): 164-168 - 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
  • Salcido-Rodríguez, Israel; Francisco Isaac Hernández-Valadez , Adriana Elizabeth Castillo-Franco , Daniel Cruz-Sáenz , Edgar Emmanuel Hernández-Juárez , David Lazcano , Lydia Allison Fucsko and Larry David Wilson 2023. Notes on the Herpetofauna of Western Mexico 31: Herpetofauna from Sierra de Tesistán, Zapopan,. Bulletin of the Chicago Herpetological Society 58(10):165-171 - get paper here
  • Tanner, W.W. 1987. Lizards and turtles of Western Chihuahua. Great Basin Naturalist. 47: 383-421 - get paper here
  • Tanner, Wilmer W. 1958. Two new skinks from Durango, Mexico. Great Basin Naturalist 18 (2): 57-62 - get paper here
  • Valdez-Lares, R.; R. Muñiz-Martínez; E.Gadsden; G. Aguirre-León; G. Castañeda-Gaytán; R. Gonzalez-Trápaga 2013. Checklist of amphibians and reptiles of the state of Durango, México. Check List 9 (4):714-724 - get paper here
  • Webb, R.G. 1984. Herpetogeography in the Mazatlán-Durango Region of the Sierra Madre Occidental, Mexico. Vetrebrate Ecology and Systematics - A ribute to Henry S. Fitch; Museum of Natural History, University of Kansas, Lawrence, pp. 217-241
 
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