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Mesoscincus schwartzei (FISCHER, 1884)

IUCN Red List - Mesoscincus schwartzei - Least Concern, LC

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Higher TaxaScincidae, Scincinae, Scincoidea, Sauria, Squamata (lizards)
Common NamesE: Mayan Black-headed Skink, Schwartze's Skink
S: Lincer de Schwartz 
SynonymEumeces schwartzei FISCHER 1884: 43
Eumeces schwartzii — GÜNTHER 1885: 33
Eurylepis schwartzei — DUNN 1933
Eumeces schwartzei — TAYLOR 1936: 94
Eumeces schwartzei — SMITH & TAYLOR 1950: 162
Eumeces schwartzei — STUART 1963
Eumeces schwartzei — LINER 1994
Mesoscincus schwartzei — GRIFFITH, NGO & MURPHY 2000
Eumeces schwartzei — KÖHLER 2000: 92
Mesoscincus schwartzei — SCHMITZ et al. 2004 
DistributionMexico (Chiapas, Yucatan, Tabasco, Campeche, Quintana Roo), Guatemala, Belize.

Type locality: “Eine kleine Insel in der Laguna de Términos (Campeche Bai)”.  
Reproductionoviparous (phylogenetic imputation, fide Zimin et al. 2022) 
TypesHolotype: ZMH R04402, Naturh. Mus. Hamburg (formerly no. 810, RK 821 Fol.335 E.K.7260). 
DiagnosisDiagnosis (genus Mesoscincus): 27 presacral vertebrae. Limbs relatively slender, lamellae not expanded. Dorsal surface of head somewhat depressed in lateral view, parietal bone with clear lateral indentations and supratemporal fontanelle open. Sexual dimorphism not distinct. Scales shiny, separated by shallow sutures. Two loreals, followed by three presubocular scales. Post-nasal scales present. Palpebral and superciliary scales not separated by groove. Elevated numbers (4 or 5 pairs) of nuchal scales, followed by several pairs of broadened mid-dorsal scales and broad row of fused mid-dorsal scales. Large medial preanal scales overlie small lateral pair. Ear lobules small and rounded, but conspicuous. Color pattern variable, but generally consists of irregular spots and longitudinal striping. From lowlands of southern Mexico (Michoacan, Yucatan Peninsula), northern and Pacific coastal Honduras, Pacific coastal Nicaragua and Costa Rica (GRIFFITH et al. 2000). 
CommentType Species: Eumeces schwartzei FISCHER 1884 is the type species of the genus Mesoscincus GRIFFITH et al. 2000. 
Etymology“zu Ehren des Herrn Obergerichtspräsidenten Dr. E. W. E. Schwartze benannt, des Präsidenten des Verwaltungsrates der Zoologischen Gesellschaft in Hamburg” (from FISCHER 1884). 
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  • Colston, Timothy J.; José António L. Barão-Nóbrega, Ryan Manders, Alice Lett, Jamie Wilmott, Gavin Cameron, Sidony Hunter, Adam Radage, Etienne Littlefair, Robert J. Williams, Antonio Lopez Cen, Kathy Slater 2015. Amphibians and reptiles of the Calakmul Biosphere Reserve, México, with new records. Check List 11 (5): 1759 - get paper here
  • Duellman, W. E. 1963. Amphibians and reptiles of the rainforest of Southern El Peten, Guatemala. Univ. Kansas Publ. Mus. Nat. Hist. 15: 205-49. - get paper here
  • Duellman, William E. 1966. The Central American herpetofauna: An ecological perspective. Copeia 1966 (4): 700-719 - get paper here
  • Dunn, E. R. 1933. A new lizard from Nicaragua. Proc. Biol. Soc. Washington 46: 67-68 - get paper here
  • Fischer, J. G. 1884. Herpetologische Bemerkungen. Abh. Nat. Ver. Hamburg 8 (2): 43-51 (3-11)
  • Gaige,H. 1936. Some reptiles and amphibians from Yucatan and Campeche, Mexico. Carnegie Inst. Wash. Publ., (457): 289-304.
  • González-Sánchez, V. H., J. D. Johnson, E. García-Padilla, V. Mata-Silva, D. L. DeSantis and L. D. Wilson. 2017. The Herpetofauna of the Mexican Yucatan Peninsula: composition, distribution, and conservation status. Mesoamerican Herpetology 4(2): 264–380 - get paper here
  • Griffith, H., A. Ngo & R. W. Murphy 2000. A cladistic evaluation of the cosmopolitan genus Eumeces Wiegmann (Reptilia, Squamata, Scincidae). Russ. J. Herpetol. 7 (1): 1-16 - get paper here
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  • Schmitz, Andreas; Patrick Mausfeld and Dirk Embert 2004. Molecular studies on the genus Eumeces Wiegmann, 1834: phylogenetic relationships and taxonomic implications. Hamadryad 28 (1-2): 73 – 89 - get paper here
  • Smith, H.M. & Taylor,E.H. 1950. An annotated checklist and key to the reptiles of Mexico exclusive of the snakes. Bull. US Natl. Mus. 199: 1-253 - get paper here
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  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
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