Publicado

2025-05-21

A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia

A new record of Atractus collaris (Serpentes: Dipsadidae) in the Brazilian Amazonia

DOI:

https://doi.org/10.15446/caldasia.v47.107792

Palabras clave:

Atractus collaris species complex, cryptozoic species, distribution extension (en)
Atractus collaris complejo de especies, criptozoico, extensión de distribución (es)

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The genus Atractus is the most diverse into the snakes. Its distribution ranges from Panama to Argentina and there are several species occurring in Brazil. One of these is Atractus collaris. This species is described from Ecuador, but also occurs in Colombia, Peru and Brazil. Despite the wide distribution of this species, in Brazil there are only two previous records in literature. This may be related mainly to the Cryptozoic habit and insufficient samplings. However, we present a new record of Atractus collaris in Central Amazonia. This is the third record for Brazil and the easternmost record for this species.

The genus Atractus is the most diverse of the snakes, containing 151 described species. Its distribution
ranges from Panama to Argentina with 44 species occurring in Brazil. Atractus collaris is a species described
from Ecuador, occurring also in Colombia, Peru, and Brazil. Despite its wide distribution, there
are only two records of this species in Brazil. This may be related to its cryptozoic habits and insufficient
sampling effort. Here we present a new record of Atractus collaris in the municipality of Itapiranga,
state of Amazonas. This is the third record for Brazil and the easternmost record for this species.

Referencias

Arteaga A, Mebert K, Valencia JH, Cisneros-Heredia DF, Peñafiel N, Reyes-Puig C, Vieira-Fernandes JL, Guayasamin JM. 2017. Molecular phylogeny of Atractus (Serpentes, Dipsadidae), with emphasis on Ecuadorian species and the description of three new taxa. ZooKeys 661: 91-123. doi: https://doi.org/10.3897/ zookeys.661.11224

Giraudo AR, Scrocchi GJ. 2000. The genus Atractus (Serpentes: Colubridae) in northeastern Argentina. Herpetological J.10: 81-90.

Nogueira CC, Argôlo AJS, Arzamendia V, Azevedo JA, Barbo FE, Bérnils RS, Bolochio BE, Borges-Martins M, Brasil-Godinho M, Braz H, Buononato MA, Cisneros-Heredia DF, Colli GR, Costa HC, Franco FL, Giraudo A, Gonzalez RC, Guedes T, Hoogmoed MS, Marques OAV, Montingelli GG, Passos P, Prudente ALC, Rivas GA, Sanchez PM, Serrano FC, Silva NJ, Strüssmann C, Vieira-Alencar JPS, Zaher H, Sawaya RJ, Martins, M. 2019. Atlas of Brazilian Snakes: Verified Point-Locality Maps to Mitigate the Wallacean Shortfall in a Megadiverse Snake Fauna. S. Am. J. Herpetol. 14: 1-274. doi: https://doi.org/10.2994/ SAJH-D-19-00120.1

Passos P, Fernandes R, Zanella N. 2005. A new species of Atractus (Serpentes: Colubridae) from Southern Brazil. Herpetologica 61(2): 209218. doi: https://doi.org/10.1655/03-91 Passos P, Fernandes R, Bérnils RS, Moura-Leite JCD. 2010. Taxonomic revision of the Brazilian Atlantic Forest Atractus (Reptilia: Serpentes: Dipsadidae). Zootaxa 2364(1): 1-63. doi: https:// doi.org/10.11646/zootaxa.2364.1.1 Passos P, Prudente ALC, Ramos LO, Caicedo-Portilla JR, Lynch JD. 2018. Species delimitations in the Atractus collaris complex (Serpentes: Dipsadidae). Zootaxa 4392(3): 491-520. doi: https://doi.org/10.11646/zootaxa.4392.3.4 Passos P, Prudente ALC. 2012. Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae). Zootaxa 3407(1): 1-21. doi: https://doi. org/10.11646/zootaxa.3407.1.1 Schargel EW, Castoe TA. 2003. The hemipenis of some snakes of the semifossorial genus Atractus, with comments on variation in the genus. J. Herpetol. 37(4): 718-721. doi: https://doi. org/10.1670/7-02N Uetz P, Freed P, Aguilar R, Hošek J. c2024. The Reptile Database. [Last accessed: 27 August 2024]. https://reptile-database.reptarium.cz/species?genus=Atractus&species=collaris

Cómo citar

APA

Mônico, A., da Cunha Martins, B. & Yuri Fernandes, I. (2025). A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia. Caldasia, 47, e107792. https://doi.org/10.15446/caldasia.v47.107792

ACM

[1]
Mônico, A., da Cunha Martins, B. y Yuri Fernandes, I. 2025. A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia. Caldasia. 47, (feb. 2025), e107792. DOI:https://doi.org/10.15446/caldasia.v47.107792.

ACS

(1)
Mônico, A.; da Cunha Martins, B.; Yuri Fernandes, I. A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia. Caldasia 2025, 47, e107792.

ABNT

MÔNICO, A.; DA CUNHA MARTINS, B.; YURI FERNANDES, I. A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia. Caldasia, [S. l.], v. 47, p. e107792, 2025. DOI: 10.15446/caldasia.v47.107792. Disponível em: https://revistas.unal.edu.co/index.php/cal/article/view/107792. Acesso em: 26 dic. 2025.

Chicago

Mônico, Alexander, Bryan da Cunha Martins, y Igor Yuri Fernandes. 2025. «A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia». Caldasia 47 (febrero):e107792. https://doi.org/10.15446/caldasia.v47.107792.

Harvard

Mônico, A., da Cunha Martins, B. y Yuri Fernandes, I. (2025) «A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia», Caldasia, 47, p. e107792. doi: 10.15446/caldasia.v47.107792.

IEEE

[1]
A. Mônico, B. da Cunha Martins, y I. Yuri Fernandes, «A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia», Caldasia, vol. 47, p. e107792, feb. 2025.

MLA

Mônico, A., B. da Cunha Martins, y I. Yuri Fernandes. «A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia». Caldasia, vol. 47, febrero de 2025, p. e107792, doi:10.15446/caldasia.v47.107792.

Turabian

Mônico, Alexander, Bryan da Cunha Martins, y Igor Yuri Fernandes. «A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia». Caldasia 47 (febrero 4, 2025): e107792. Accedido diciembre 26, 2025. https://revistas.unal.edu.co/index.php/cal/article/view/107792.

Vancouver

1.
Mônico A, da Cunha Martins B, Yuri Fernandes I. A new record of the Collared Ground Snake Atractus collaris Peracca, 1897 (Serpentes: Colubridae) in Brazilian Amazonia. Caldasia [Internet]. 4 de febrero de 2025 [citado 26 de diciembre de 2025];47:e107792. Disponible en: https://revistas.unal.edu.co/index.php/cal/article/view/107792

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