A new species of spiny-tailed iguanid lizard (Iguania: Stenocercus) from northwestern Peru

Abstract

We describe a new species of Stenocercus from the interandean valley of Río Chotano on the Amazonian slope of the northern portion of the Cordillera Occidental of Peru (Cajamarca Region), at elevations of between 1997 and 2318 m. Stenocercus arndti sp. nov. differs from other Stenocercus, except from S. bolivarensis, S. carrioni, S. chlorostictus, S. crassicaudatus, S. empetrus, S. eunetopsis, S. simonsii, and S. torquatus, in having granular scales on the posterior surface of the thighs, two caudal whorls per autotomic segment, mucronate caudal scales, and distinct longitudinal row of enlarged vertebral scales. However, Stenocercus arndti sp. nov. is easily distinguished from these species in having a bold black transversal band at midbody that extends ventrolaterally in adult males.

Molecular data reveal spatial and temporal patterns of diversification and a cryptic new species of lowland Stenocercus Duméril & Bibron, 1837 (Squamata: Tropiduridae)

“…A notice- 79 able case is that of Stenocercus lizards, for which a number of spe- 80 cies occurring in open settings has only recently been described 81 and recorded (Nogueira and Rodrigues, 2006;Ribeiro et al, 2009;82 Torres- Carvajal, 2005). Currently, Stenocercus is one of the most 83 speciose South American lizard genera, with 66 valid taxa 84 (Torres-Carvajal, 2007a;Torres-Carvajal and Mafla-Endara, 2013;85 Venegas et al, 2013Venegas et al, , 2014Köhler and Lehr, 2015). The genus is 86 particularly diverse along the Andes, from Venezuela in the north 87 to central Argentina in the south, reaching up to 4000 m in eleva-88 tion (Torres-Carvajal, 2007a).…”

Two new species of wood lizards (Hoplocercinae: Enyalioides) from Cordillera de Colán in north-eastern Peru

“…Including the two new species described herein, the herpetological exploration of the Andes from northern Peru in the last three decades has resulted in the discovery of 35 species of lizards belonging to ten genera (i.e. two species of Ameiva Meyer, 1795, one Cercosaura Wagler, 1830, six Enyalioides , two Macropholidus Noble, 1921, two Petracola Doan & Castoe, 2005, one Pholidobolus Peters, 1863, one Polychrus Linnaeus, 1758, three Phyllodactylus Gray, 1828, one Phyllopezus Peters, 1877, and sixteen Stenocercus ) (Cadle 1991, 1998, 2001, Cadle & Chuna 1995, Torres-Carvajal 2005, Koch et al 2006, 2011, 2013, 2016, Venegas et al 2008, 2013a, b, 2014, 2016a, b, 2020, 2022, Echevarría & Venegas 2015, Echevarría et al 2015, 2021, Torres-Carvajal et al 2015, 2020, Rodríguez & Mamani 2020). Most of these species are known from a few localities restricted or adjacent to the Huacabamba Depression, which represents a complex orographic scenario where Andean mountain ranges are separated by deep valleys (Duellman & Pramuk 1999).…”

Four new species of Stenocercus Duméril & Bibron, 1837 (Squamata, Iguania) from the Department of Amazonas in northeastern Peru

“…On the other hand, some species like S. chrysopygus Boulenger, 1900, are known to possess intraspecific variation among populations that merits careful examination and phylogenetic analysis (Fritts 1974;Cadle 1998;Schluter 2000;Torres-Carvajal 2007b). In fact, several undescribed species remain in herpetological collections awaiting formal description and new species are discovered in the Peruvian Andes continuously (Venegas et al 2013(Venegas et al , 2014a(Venegas et al , 2016(Venegas et al , 2020Köhler and Lehr 2015).…”