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Diplolaemus sexcinctus CEI, SCOLARO & VIDELA, 2003

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Higher TaxaLeiosauridae (Leiosaurinae), Iguania, Sauria, Squamata (lizards)
Common Names 
SynonymForma alto-patagónicas y mendocina — CEI 1986
Diplolaemus sexcinctus CEI, SCOLARO & VIDELA 2003
Diplolaemus altopatagonica — SCHULTE et al. 2003
Diplolaemus sexcintus — TULLI et al. 2009 (in error)
Diplolaemus sexcinctus — PEREZ et al. 2011
Diplolaemus sexcinctus — DEMANGEL 2016 
DistributionArgentina (Rio Negro, Chubut), S Chile

Type locality: Meseta Pedregosa, 1100 m.elevation, 10 km south of Las Bayas, Rio Negro province, Argentina ( 41°30’S, 70°38’W).  
TypesHolotype: IBAUNC 605-1, adult male; Paratypes: IBAUNC 605-2, some data as holotype; IBA- UNC-1412-1, 2, adults, male and female, from between Puesto Alvarado and Cruz de Piedra, road to Diamante lake, Mendoza province, 2750 m.a.s.l., collected by L.P. Castro, G. Macola and J. García, 22 March 1982; IBA-UNC-926, an adult female, from Portillo Argentino, 2500 m.a.s.l., Tunuyán department, Mendoza province, collected by A. Mataloni, 12 February 1973; MMHN.SR-H-1113, an adult male, from P. Coihueco, southern border of Payún, Malargüe department, Mendoza province, collected by MMHN, no data; IBA-UNC-461, an adult female, from Raimunda lagoon, Somuncurá plateau, 1400 m.a.s.l., Valcheta department, Río Negro province, Argentina, collected by J.M.Cei, 20 February 1967; IBA-UNC-418, an adult female from Laguna Blanca, 1275 m.a.s.l., 35 km SW Zapala, Neuquén province, collected J. M. Cei, 2 December 1965; IBA-UNC-513, an adult female, from Cerro Merlo, 1200 m.a.s.l., Somuncurá plateau, Valcheta department, Río Negro province, Argentina, collected by J. M. Cei and L. P. Castro, 18 November 1968; IBA-UNC-1177-1,2, two adults males from a plateau 80 km south Nihuil, 15 km W Nevado embossment, 1800 m.a.s.l., San Rafael department, Mendoza province, Argentina, collected by J. M. Cei, P. Tuzi and F. Videla, 23 December 1975; IBA-UNC-611-1,2, juveniles males, from Arroyo Las Bayas basaltic slopes, 850-1100 m.a.s.l., Río Negro province, collected by J. M. Cei, L.M. Cei, 9 January 1975; CH-IADIZA-242, an adult female, from El Nihuil, San Rafael department, Mendoza province, Argentina, collected by F. Videla and S. Puig, 22 February 1987; MLP-1652, 1656, 1658, adult males from byway Rincón- Raimunda lagoon, 1200-1400 m.a.s.l., Somuncurá plateau, Valcheta department, Río Negro province, collected by J. D. Williams, 25 November 1995; MLP-1653,1657, adult female, the same anterior data. 
DiagnosisDiagnosis: Diplolaemus sexcinctus differs from D. darwinii, in having a major size; more than 2 scales between nostril and rostral; mental bordered by no contacting first infralabial and first postmental; temporals uniformly small; supraoculars and supralabials separated by 3-5 or more scale rows; only a distinct gular fold; a very different dorsal color pattern, with the regular black marks on immaculate throat absent. It differs from its nearly relative taxon D. bibronii in having a peculiar six-banded color pattern, always recognizable in all sympatric populations, as well as a bilobate hemipenis differing in shape and ornaments from the larger and apically dilated hemipenis of D. bibronii. Apparently, it differs from the poorly known D. leopardinus in having more scale rows between suboculars and supralabials (2-3 scale rows in D. leopardinus, fide Donoso Barros, 1966); no contacting first infralabial and first postmental bordering mental, a dorsal color pattern contrasting with D. leopardinus pattern, whose large rounded dorsal spots are composed by few dark heavy marks more irregularly distributed in six transverse bands, giving thus the coarse appearance of a leopard skin. 
CommentSynonymy: partly after PINCHEIRA-DONOSO et al. 2007. It seems that this species was previously considered a northern population of D. bibronii (from Chubut northwards).

NCBI taxonomy ID: 211981 (altopatagonica) 
EtymologyThe specific name is easily referable to the six pigmentary bands (latin sex: six, cinctus: girdle) dorsally and laterally shown by these lizards, from shoulder to sacral region. 
  • AVILA, LUCIANO JAVIER; LORENA ELIZABETH MARTINEZ & MARIANA MORANDO 2013. Checklist of lizards and amphisbaenians of Argentina: an update. Zootaxa 3616 (3): 201–238 - get paper here
  • Cei, J.M. 1986. Reptiles del centro, centro-oeste y sur de la Argentina; herpetofauna de las zonas aridas y semiaridas. Mus. Regionale di Sci. Natur., Torino, Monogr. 4: 527 pp.
  • Cei, J.M.; Scolaro, J.A. & Videla, F. 2003. A taxonomic revision of recognized Argentine species of the leiosaurid genus Diplolaemus (Reptilia, Squamata, Leiosauridae). Facena 19: 87-106 - get paper here
  • Demangel, Diego 2016. Reptiles en Chile. Fauna Nativa Ediciones, Santiago, 619 pp - get paper here
  • Femenias, M. M., Avila, L. J., Sites, J. W. & Morando, M. 2019. The enigmatic Leiosaurae clade: Phylogeography, species delimitation, phylogeny and historical biogeography of its southernmost species. Mol. Phylogenet. Evol. 106725 (2019). doi: - get paper here
  • Minoli I, Morando M, Avila LJ 2015. Reptiles of Chubut province, Argentina: richness, diversity, conservation status and geographic distribution maps. ZooKeys 498: 103-126. doi: 10.3897/zookeys.498.7476 - get paper here
  • Perez, C.H.F.; N. Frutos; M. Kozykariski; M. Morando; D.R. Perez; L.J. Avila. 2011. Lizards of Rio Negro Province, northern Patagonia, Argentina. Check List 7 (3): 202-219 - get paper here
  • Reyes-Olivares, C. and Labra, A. 2017. Emission of sounds by native lizards of Chile: the state of the art. Boletín Chileno de Herpetología. 4: 1-9 - get paper here
  • Scrocchi, Gustavo J.; Cristian S. Abdala,Javier Nori, Hussam Zaher 2010. Reptiles de la provincia de Río Negro, Argentina. Fondo Ed. Rionegrino, 249 pp.
  • Tulli, M.J.; F.B. Cruz, A. Herrel, B. Vanhooydonck, V. Abdala 2009. The interplay between claw morphology and microhabitat use in neotropical iguanian lizards. Zoology 112 (5): 379-392 - get paper here
  • Winchell, S. 2010. Die Reptilien Argentiniens. Reptilia (Münster) 15 (83): 20-27 - get paper here
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