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Enyalioides rudolfarndti VENEGAS, DURAN, LANDAURO & LUJAN, 2011

IUCN Red List - Enyalioides rudolfarndti - Least Concern, LC

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Higher TaxaHoplocercidae, Iguania, Sauria, Squamata (lizards)
Common Names 
SynonymEnyalioides rudolfarndti VENEGAS, DURAN, LANDAURO & LUJAN 2011 
DistributionC Peru (Oxapampa: Yanachaga Chemillen National Park)

Type locality: Pan de Azucar trail near the Puesto de Control Huampal in the YCNP (10°11 ́03 ́ ́ S 75°34 ́27 ́ ́ W; WGS 84) at 1050 m elevation, Provincia de Oxapampa, Región de Pasco, Peru  
Reproductionoviparous (manual and phylogenetic imputation, fide Zimin et al. 2022) 
TypesHolotype: CORBIDI 07209 (Figs. 1–2), an adult male, collected on 16.VIII.2010 by P. J. Venegas. Paratypes. CORBIDI 07210 and 07213, an adult female and a juvenile, respectively, collected with the holo- type by P. J. Venegas, V. Duran, C. Z. Landauro, and L. Lujan. CORBIDI 07212, an adult male from the same loca- tion of the holotype but taken on 19.VIII.2010 by P. J. Venegas. 
DiagnosisDiagnosis: Enyalioides rudolfarndti can be easily distinguished from other species of Enyalioides from the Amazon basin by the combination of the following characters: (1) scales posterior to the superciliaries enlarged (relative to adjacent scales), forming a well defined longitudinal row of distinctly raised scales across the lateral edge of the head in juveniles and adults of both sexes; (2) 30 or fewer longitudinal rows of dorsals in a transverse line between the dorsolateral crests at midbody; (3) a distinct orange round blotch on the antehumeral region in adult males; (4) ventral scales strongly keeled; (5) caudal scales heterogeneous in size on each autotomic segment. The orange round blotch on the antehumeral region in adult males of Enyalioides rudolfarndti is present also in some male individuals of E. palpebralis (Fig. 4). Furthermore, the new species also shares with E. palpebralis the presence of enlarged scales posterior to the superciliaries and the presence of strongly keeled ventral scales; however, the latter species can be easily distinguished from E. rudolfarndti by having a superciliary triangular flap that projects posterolaterally over each eye. In addition, E. palpebralis is the only species that has (most specimens) a discontinuous vertebral crest, having a small gap on the neck, and lacks femoral pores (Torres-Carvajal et al. 2011). Enyalioides cofanorum and E. microlepis share with the new species the presence of strongly keeled ventral scales and caudal scales of heterogeneous size on each autotomic segment. However, E. cofanorum differs from E. rudolfarndti (characters in parentheses) by having with more than 33 dorsal scales in a transverse line between the dorsolateral crests at midbody (30 or fewer) and scattered, projecting, large dorsal scales (absent). Enyalioides microlepis differs from E. rudolfarndti by having more than 40 dorsal scales in a transverse line between the dorsolateral crest at midbody (30 or fewer dorsal scales), and a low vertebral crest (high). In addition, adult males of E. cofanorum and E. microlepis have a black patch that covering the gular region (absent). 
CommentAbundance: only known from its original description (Meiri et al. 2017). 
EtymologyThe specific name is a patronym for Dr. Rudolf G. Arndt of Pomona, New Jersey, USA, in recognition of his financial support for the improvement of the herpetological collection of CORBIDI through the BIOPAT-Programme. 
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • Venegas PJ, Torres-Carvajal O, Duran V, de Queiroz K 2013. Two sympatric new species of woodlizards (Hoplocercinae, Enyalioides) from Cordillera Azul National Park in northeastern Peru. ZooKeys 277: 69–90. doi: 10.3897/zookeys.277.3594 - get paper here
  • Venegas, P. J., Chávez, G., García-Ayachi, L. A., Duran, V., & Torres-Carvajal, O. 2021. A new species of wood lizard (Hoplocercinae, Enyalioides) from the Río Huallaga Basin in Central Peru. Evolutionary Systematics, 5: 263–273 - get paper here
  • VENEGAS, PABLO J.; VILMA DURAN, CAROLL Z. LANDAURO & LESLY LUJAN 2011. A distinctive new species of wood lizard (Hoplocercinae, Enyalioides) from the Yanachaga Chemillen National Park in central Peru. Zootaxa 3109: 39–48 - get paper here
  • 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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