Integrative taxonomy of the gymnophthalmid lizard <i>Neusticurus rudis</i> Boulenger, 1900 identifies a new species in the eastern Pantepui region, north-eastern South America

Kok, Philippe J. R.; Bittenbinder, Mátyás A.; Berg, Joris K. van den; Marques‐Souza, Sergio; Nunes, Pedro M. Sales; Laking, Alexandra E.; Teixeira, Mauro; Fouquet, Antoine; Means, D. Bruce; MacCulloch, Ross D.; Rodrigues, Miguel Tréfaut

doi:10.1080/00222933.2018.1439541

Cited by 17 publications

(8 citation statements)

References 34 publications

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“…For comparisons with all other genera of crocodile-like gymnophthalmids, we used morphological descriptions from the literature (Boulenger 1890(Boulenger , 1911Barbour 1924;Uzzell 1965Uzzell , 1966Fritts & Smith 1969;Fritts et al 2002;Köhler et al 2004;Donnelly et al 2006;Lotzkat et al 2012;Fang et al 2020;Vásquez-Restrepo et al 2020). we followed Kok et al (2018) and Vásquez-Restrepo et al (2020) for morphological description format, pholidotic nomenclature, and scale counts. Scale counts and measurements were made by the first author under a stereomicroscope; bilateral meristic and qualitative characters were recorded from both sides and are presented as left/right.…”

Section: Methodsmentioning

confidence: 99%

Discovery of an additional piece of the large gymnophthalmid puzzle: a new genus and species of stream spiny lizard (Squamata: Gymnophthalmidae: Cercosaurinae) from the western Guiana Shield in Venezuela

Rojas-Runjaic¹,

Barrio-Amorós

Señaris

et al. 2021

Zootaxa

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Gymnophthalmids are a highly diverse group of Neotropical lizards and its species richness is still in process of discovery. The incorporation of molecular evidence and a noticeable increase in taxon and geographic sampling in systematic studies has led to the description of numerous new genera and species of gymnophthalmids (particularly in Cercosaurinae) in recent years. Herein we describe a new genus and species of cercosaurine lizard with crocodile-like morphology, from the Venezuelan Guiana Shield on the basis of molecular phylogenetic and morphological evidence. Kataphraktosaurus gen. nov. can be readily distinguished from all other genera of Cercosaurinae by a unique combination of morphological characters that includes heterogeneous dorsal scalation with enlarged and strongly keeled scales forming two paravertebral rows, ventral and subcaudal scales imbricated and strongly keeled, large and symmetrical cephalic scales, absence of postmental scale, palpebral disc translucent and divided, tail slightly compressed, all digits clawed, and only six femoral pores (three at each hindlimb) inserted in a clump of small scales. This genus is described as monotypic and only contains Kataphraktosaurus ungerhamiltoni sp. nov., which is known from one specimen and diagnosed by the same set of aforementioned characters. The secretive habits of this species and the remoteness of the locality may explain its singleton situation. Following the International Union for Conservation of Nature’s criteria, we categorized the new species as Data Deficient.

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Section: Methodsmentioning

confidence: 99%

Discovery of an additional piece of the large gymnophthalmid puzzle: a new genus and species of stream spiny lizard (Squamata: Gymnophthalmidae: Cercosaurinae) from the western Guiana Shield in Venezuela

Rojas-Runjaic¹,

Barrio-Amorós

Señaris

et al. 2021

Zootaxa

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“…Over the last decade, molecular studies have helped resolve some mysteries in the taxonomy of gymnophtalmid lizards (Goicoechea et al 2012(Goicoechea et al , 2013Torres-Carvajal et al 2016;Kok et al 2018;Moravec et al 2018;Sánchez-Pacheco et al 2018;Fang et al 2020;Vasquez-Restrepo et al 2020). These studies untied complicated knots in the systematics of Cercosaurinae Gray, 1838, especially in the genera Echinosaura Boulenger, 1890, Gelanesaurus Torres-Carvajal, Lobos, Venegas, Chávez, Aguirre-Peñafiel, Zurita & Echevarría, 2016, Neusticurus Duméril & Bibron, 1839, Proctoporus Tschudi, 1845, Potamites Doan & Castoe, 2005, and Riama Gray, 1858.…”

Section: Introductionmentioning

confidence: 99%

A new riparian Andean Potamites (Reptilia, Squamata, Gymnophtalmidae) from El Sira Mountains, central Peru, with comments on P. ecpleopus Cope 1875, and on the taxonomy and biogeography of Potamites

Chavéz

Malqui

Catenazzi

2021

EJT

1,054

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We describe a new species of riparian lizard from the foothills and submontane forest of El Sira Communal Reserve, Departamento de Huánuco, Peru, at elevations from 540 to 760 m. We name the new species Potamites hydroimperator sp. nov. because it is the only lizard living in streams in this isolated mountain. The new species is distinguishable from other congeners (except P. ecpleopus) by having longitudinal rows of keeled scales on dorsum, and males with 5–8 lateral ocelli on each flank. Potamites hydroimperator sp. nov. differs from P. ecpleopus by being smaller, having dorsal scales on forelimbs smooth or slightly keeled, subconical tubercles on forelimbs weakly present or absent, and four to five superciliar scales. We comment on variation in the pattern of keeling of dorsal scales among Amazonian lowland, Andean foothills and montane species of Potamites, and the potential relevance of this scalation pattern for taxonomic and biogeographic studies. The new species increases our knowledge of the diverse and endemic herpetofauna of El Sira, and of diversity within the genus Potamites. Despite El Sira’s status as natural protected area, gold mining activities are destroying the streams where we found P. hydroimperator sp. nov., threatening their populations.

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“…Recent phylogeographic studies based on non-flying vertebrates (e.g. Kok et al 2012 , 2017 , 2018a , b , Leite et al 2015 , Lehmberg et al 2018 ) suggested a complex historical biogeography involving the synergy of long distance dispersals, vicariance and habitat shifts.…”

Section: Introductionmentioning

confidence: 99%

Anomaloglossus meansi sp. n., a new Pantepui species of the Anomaloglossus beebei group (Anura, Aromobatidae)

Kok¹,

Nicolaï²,

Lathrop³

et al. 2018

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Recent extinctions and drastic population declines have been documented in the Guiana Shield endemic frog genus Anomaloglossus, hence the importance to resolve its alpha-taxonomy. Based on molecular phylogenies, the literature has long reported the occurrence of an undescribed species in the Pakaraima Mountains of Guyana in the Pantepui region. We here describe this new taxon and demonstrate that in addition to divergence at the molecular level the new species differs from congeners by a unique combination of morphological characters, notably a small size (maximum SVL in males 18.86 mm, maximum SVL in females 21.26 mm), Finger I = Finger II when fingers adpressed, Finger III swollen in breeding males, fringes on fingers absent, toes basally webbed but lacking fringes, in life presence of a thin dorsolateral stripe from tip of snout to tip of urostyle, and a black throat in preserved males (immaculate cream in females). Virtually nothing is known about the ecology of the new species. We suggest the new species to be considered as Data Deficient according to IUCN standards.

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Integrative taxonomy of the gymnophthalmid lizard Neusticurus rudis Boulenger, 1900 identifies a new species in the eastern Pantepui region, north-eastern South America

Cited by 17 publications

References 34 publications

Discovery of an additional piece of the large gymnophthalmid puzzle: a new genus and species of stream spiny lizard (Squamata: Gymnophthalmidae: Cercosaurinae) from the western Guiana Shield in Venezuela

Discovery of an additional piece of the large gymnophthalmid puzzle: a new genus and species of stream spiny lizard (Squamata: Gymnophthalmidae: Cercosaurinae) from the western Guiana Shield in Venezuela

A new riparian Andean Potamites (Reptilia, Squamata, Gymnophtalmidae) from El Sira Mountains, central Peru, with comments on P. ecpleopus Cope 1875, and on the taxonomy and biogeography of Potamites

Anomaloglossus meansi sp. n., a new Pantepui species of the Anomaloglossus beebei group (Anura, Aromobatidae)

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