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Arthrosaura montigena MYERS & DONNELLY, 2008

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Higher TaxaGymnophthalmidae (Ecpleopodinae), Sauria, Gymnophthalmoidea, Squamata (lizards)
Subspecies 
Common Names 
SynonymArthrosaura montigena MYERS & DONNELLY 2008: 89 
DistributionVenezuela (Auyantepui)

Type locality: summit of Auyantepui at 5°58’N, 62°33’W (AMNH– TERRAMAR Camp 4), 1600 m elevation, Bolívar, Venezuela.  
Reproductionoviparous 
TypesHolotype: EBRG 2905 (field no. CWM 19354), an adult female, collected February 22, 1994, AMNH–TERRAMAR Expedition.
PARATYPE: AMNH 140230 (CWM 19165), a male from summit of Auyantepui at 5°51’N, 62°32’W (AMNH–TERRAMAR Camp 1), 1700 m, Bolívar, Venezuela, collected February 7, 1994, AMNH–TERRAMAR Expedition. Figure 53. 
DiagnosisDIAGNOSIS (n=2): A small highland species of Arthrosaura readily distinguished from its nearest geographic neighbor (A. testigensis, Los Testigos range, east of Auyantepui) in having three (vs. four) supraoculars and in having a pale dorsolateral line on each side and an unmarked venter (vs. four narrow yellowish stripes on dorsum and brown spots on venter). A presumably unnamed species from the Chimantá massif (southeast of Auyantepui) evidently differs from A. montigena in having a dark brown middorsal stripe (Gorzula and Señaris, 1999: photo 89). Arthrosaura montigena shares many characteristics of A. versteegii (French Guiana to extreme eastern Venezuela, as redefined by Hoogmoed and Avila-Pires 1992: 470–477) but differs in having a more complete pale dorsolateral line and in not having the ventral or ventrolateral scales sharply demarcated by a zone of small scales. (Myers & Donnelly 2008) 
CommentKey to species known in 2008: Myers & Donnelly 2008: 97. 
References
  • Avila-Pires T, Hoogmoed M, Silva M 2018. First records in Brazil for Arthrosaura versteegii van Lidth de Jeude, 1904 (Reptilia, Gymnophthalmidae), a possible species complex, and distribution extension for Arthrosaura montigena Myers & Donnelly, 2008, in Venezuela. Check List 14(4): 569-577 - get paper here
  • Myers, Charles W.;Donnelly, Maureen A. 2008. The Summit Herpetofauna Of Auyantepui, Venezuela: Report From The Robert G. Goelet American Museum-Terramar Expedition. Bulletin of the American Museum of Natural History 308: 1-147 - get paper here
  • RIVAS, GILSON A.; CÉSAR R. MOLINA, GABRIEL N. UGUETO, TITO R. BARROS, CÉSAR L. BAR- RIO-AMORÓS & PHILIPPE J. R. KOK 2012. Reptiles of Venezuela: an updated and commented checklist. Zootaxa 3211: 1–64 - get paper here
 
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