| Higher Taxa | Gymnophthalmidae (Rhachisaurinae), Sauria, Gymnophthalmoidea, Squamata (lizards) |
| Subspecies | |
| Common Names | E: Dixon's Anotosaura
Portuguese: Lagartinho, Lagarto-do-Folhiço |
| Synonym | Anotosaura brachylepis DIXON 1974: 17
Rhachisaurus brachylepis — PELLEGRINO et al. 2001
Rhachisaurus brachylepis — CASTOE et al. 2004
Rhachisaurus brachylepis — GOMIDES et al. 2020 |
| Distribution | Brazil (Minas Gerais)
Type locality: Brazil, Minas Gerais, Serra do Cipo
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| Reproduction | oviparous |
| Types | Holotype: MCZ 133174, adult female |
| Diagnosis | Diagnosis (genus): The genus Rhachisaurus is characterized by the absence of an external ear opening, the presence of four digits on the front and hind limbs, a high number of short, narrow and smooth dorsal scales (57–60), absence of collar, a tail that is more than twice body length, a large number of temporals, ten rows of gulars, three pairs of chinshields, four supraoculars, six superciliaries, squared ventrals and rounded scales in the lateral sides of the neck.
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| Comment | Type species: Anotosaura brachylepis DIXON 1974 is the type species of the genus Rhachisaurus PELLEGRINO et al. 2001. The species is also the type (and only) species of the subfamily Rhachisaurinae. |
| Etymology | Named after Greek brachys (βραχύς), short + Greek lepis (λεπίς), scale; epithelial debris. (Esteban Lavilla, pers. comm., April 2024)
The genus was named after Greek rachis (ράχις), backbone, spine; ridge + Greek sauros (σαῦρος), lizard. |
| References |
- Castoe, T.A.; Doan, T.M. & Parkinson, C.L. 2004. Data partitions and complex models in Bayesian analysis: the phylogeny of Gymnophthalmid lizards. Systematic Biology 53 (3): 448-469 - get paper here
- Dixon,J.R. 1974. Systematic review of the lizard genus Anotosaura (Teiidae). Herpetologica 30: 13-18 - get paper here
- Gomides, Samuel C.; Mauro Teixeira Junior, Fernando Leal, Hans Thomassen, José Cassimiro, Renato Sousa Recoder, Hugo Bonfim de Arruda Pinto, Miguel Trefaut Rodrigues, Felipe Sá Fortes Leite 2020. Redescription and Geographical Distribution of a Rare Microteiid Lizard: Rhachisaurus brachylepis (Squamata: Gymnophthalmidae). South American J. Herp. 15 (1): 20-29 - get paper here
- Gonzalez R. C. et al. 2020. Lista dos Nomes Populares dos Répteis no Brasil – Primeira Versão. Herpetologia Brasileira 9 (2): 121 – 214 - get paper here
- Pellegrino, K. C. M.; Rodrigues, M. T.; Yonenaga-Yassuda, Y.; Sites, J. W. 2001. A molecular perspective on the evolution of microteiid lizards (Squamata, Gymnophthalmidae), and a new classification for the family. Biological Journal of the Linnean Society 74 (3): 315-338 - get paper here
- RIBEIRO-JÚNIOR, MARCO A. & SILVANA AMARAL 2017. Catalogue of distribution of lizards (Reptilia: Squamata) from the Brazilian Amazonia. IV. Alopoglossidae, Gymnophthalmidae. Zootaxa 4269 (2): 151-196 - get paper here
- Ribeiro-Júnior, Marco A. & Silvana Amaral 2016. Diversity, distribution, and conservation of lizards (Reptilia: Squamata) in the Brazilian Amazonia. Neotropical Biodiversity, 2:1, 195-421 - get paper here
- RODRIGUES, MIGUEL TREFAUT; ELIZA MARIA XAVIER FREIRE, KATIA CRISTINA MACHADO PELLEGRINO and JACK W. SITES JR 2005. Phylogenetic relationships of a new genus and species of microteiid lizard from the Atlantic forest of north-eastern Brazil (Squamata, Gymnophthalmidae). Zoological Journal of the Linnean Society 144 (4): 543-557 - get paper here
- Rodrigues, Miguel Trefaut; Katia Cristina Machado Pellegrino, Marianna Dixo, Vanessa Kruth Verdade, Dante Pavan, Antônio Jorge Suzart Argolo, and Jack W. Sites Jr. 2007. A new genus of microteiid lizard from the Atlantic forests of State of Bahia, Brazil, with a new generic name for Colobosaura mentalis, and a discussion of relationships among the Heterodactylini (Squamata, Gymnophthalmidae). American Museum novitates (3565): 1-27 - get paper here
- Vanzolini, P. E. 1976. Two notes on Anotosaura (Sauria, Teiidae). Pap. Avulsos Zool. 30 (8): 119-122 - get paper here
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