Dendrosauridion yanesha LEHR, MORAVEC, LUNDBERG, KÖHLER, CATENAZZI & ŠMÍD, 2019
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Dendrosauridion yanesha
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| Higher Taxa | Gymnophthalmidae, Cercosaurinae, Sauria, Gymnophthalmoidea, Squamata (lizards) |
| Subspecies | |
| Common Names | E: Yanesha tree microtegu Spanish: Lagartija arboricola de Yanesha |
| Synonym | Dendrosauridion yanesha LEHR, MORAVEC, LUNDBERG, KÖHLER, CATENAZZI & ŠMÍD 2019 |
| Distribution | Peru (Oxapampa) Type locality: mountain ridge close to the radio tower at Chacos (10.658S, 75.298W; WGS84), 2780 m a.s.l., Distrito Oxapampa, Provincia Oxapampa, Region Pasco, Peru |
| Reproduction | oviparous (manual imputation, fide Zimin et al. 2022) |
| Types | Holotype: MUSM 25345 (sample code ML 1352, GenBank Accession # MH579624, MH579658, MH579685), an adult male, collected on 2 November 2005 by M. Lundberg. Paratypes (Figs 6–7): Two males (one adult, one juvenile): NMP-P6V 75204 (sample code ML 853), adult male, collected at the type locality on 21 August 2004 by M. Lundberg; MUSM 27618 (sample code EL 409; erroneously labelled as MUSM 27610 in Moravec et al. 2018; GenBank Accession # MH579623); juvenile male, collected in a secondary forest at Hospedaje Alfamayo (ca. 13.0656S, 72.416W; WGS84), 2825 m a.s.l., Distrito Huayopata, Provincia La Convención, Region Cusco, Peru, on 29 March 2009 by E. Lehr. |
| Diagnosis | Diagnosis (genus): Phenotypic synapomorphies are not known for this genus. Morphologically, Dendrosauridion gen. n. can be distinguished from all other genera of Cercosaurinae by the combination of the following characters: lower palpebral disc transparent, not divided (divided in Anadia, Andinosaura, Euspondylus, Gelanesaurus, Oreosaurus, Petracola, Riama, and most Placosoma species; opaque in Pholidobolus); dorsal scales smooth (keeled in Cercosaura and most Proctoporus; strongly keeled and tuberculate in Echinosaura, Gelanesaurus, Neusticurus, Potamites; minute tubercles on posterior dorsal scales in Placosoma; slightly rugose in Selvasaura); lateral scales distinctly smaller than dorsal scales (lateral scales not distinctly reduced in size in Macropholidus); lateral scales adjacent to ventrals nongranular, not forming a distinct longitudinal line along body axis (granular, forming a continuous series of small lateral scales bordering the ventral scales in Proctoporus) (comp., e.g., Oftedal 1974, Cadle & Chuna 1995, Altamirano-Benavides et al. 2013, Kok et al. 2013, Torres-Carvajal & Mafla-Endara 2013, Echevarría et al. 2015, Borges-Nojosa et al. 2016, Chávez et al. 2017, Sánchez-Pacheco et al. 2017, Moravec et al. 2018). Because of some superficial resemblance of Dendrosau ridion gen. n. and Proctoporus we compare both genera. According to Goicoechea et al. (2012) and Mamani et al. (2015), Proctoporus are small to medium-sized, semi-fossorial lizards that occur in Yungas forests and wet montane grasslands, between 1000 and 4000 m a.s.l., along the Amazonian versant of the Andes from central Peru to Bolivia and northern Argentina). The 16–17 currently known species of Proctoporus (Uetz et al. 2018) all have keeled dorsal scales (except P. xestus which has smooth dorsals, and P. laudahnae which has striated dorsals), and a narrow continuous series of small lateral scales bordering the ventral scales. Dendrosauridion gen. n. can be distinguished from Proctoporus (characters in parentheses) phenotypically based on its arboreal habits (semi-fossorial), its smooth dorsal scales (keeled in all except P. xestus and P. laudah nae), and its lateral scales forming an irregular pattern up to seven scales wide on the flanks, which is not discernable as a distinct longitudinal line along the body axis (continuous series of small lateral scales bordering the ventral scales), and its pointed and moderately long snout (bluntly rounded, short). Dendrosauridion gen. n. can be distinguished from Unnamed clade 2 (sensu Torres-Carvajal et al. 2016, Moravec et al. 2018; characters in parentheses) phenotypically based on its arboreal habits (semi-fossorial), its smooth dorsal scales (weakly keeled dorsal scales), lateral scales forming an irregular pattern up to seven scales wide on the flanks, which is not discernible as a distinct longitudinal line along body axis (continuous series of small lateral scales bordering the ventral scales), and its pointed and moderately long snout (bluntly rounded, short). Genetically, the new genus is identified as a distinct clade separated from other cercosaurines, but its phylogenetic affinities to other cercosaurine genera remain uncertain (Moravec et al. 2018, Fig. 2). Additional details (3307 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | Type species: Dendrosauridion yanesha is the type species of the genus Dendrosauridion LEHR, MORAVEC, LUNDBERG, KÖHLER, CATENAZZI & ŠMÍD 2019. |
| Etymology | The species epithet yanesha is used in reference to the indigenous people Yanesha’ or Amuesha that is native to forests in the central Peruvian regions of Huánuco, Junín, and Pasco at altitudes up to 1600 m a.s.l. The genus name Dendrosauridion is derived from the Greek nouns ‘dendron’ (tree; neutrum) and ‘sauridion’ (small lizard; diminutive, neutrum) and is in allusion to the arboreal habits of the type species. |
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