Atractus francoi

Atractus francoi
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Colubridae
Genus:	Atractus
Species:	A. francoi
Binomial name
	Atractus francoi; Passos, Fernandes, Bérnils & Moura-Leite, 2010

Last updated October 01, 2025

Atractus francoi, also known commonly as cobra-da-terra in Brazilian Portuguese, is a species of snake in the family Colubridae. The species is endemic to Brazil.^[2]

Etymology

The specific name, francoi, is in honor of Brazilian herpetologist Francisco Luís Franco.^[3]^: 93

Geographic range

A. francoi is found in the Brazilian states of Rio de Janeiro ^[1]^[2] and São Paulo.^[1]

Habitat

The preferred natural habitat of A. francoi is forest.^[1]

Description

A. francoi may attain a snout-to-vent length (SVL) of about 50 cm (20 in).^[1] It has seven upper labials and seven lower labials.^[2] The dorsal scales are arranged in 17 rows throughout the length of the body.^[2] The tail is short in females (about 7% SVL) and moderate in males (about 13% SVL).^[2]

Behavior

A. francoi is both diurnal and nocturnal, and it is fossorial.^[1]

Diet

A. francoi preys upon worms.^[1]

Reproduction

A. francoi is oviparous. Clutch size is at least six eggs.^[1]

References

1 2 3 4 5 6 7 8 Silveira, A.L.; Prudente, A.L. da C.; Argôlo , A.J.S.; Abrahão, C.R.; Nogueira, C. de C.; Barbo, F.E.; Costa, G.C.; Pontes, G.M.F.; Colli, G.R.; Zaher, H. el D.; Borges-Martins, M.; Martins, M.R.C.; Oliveira , M.E.; Passos, P.G.H.; Bérnils, R.S.; Sawaya, R.J.; Cechin, C.T.Z.; Guedes da Costa, T.B. (2021). "Atractus francoi". IUCN Red List of Threatened Species . 2021 e.T15158247A123739456. doi: 10.2305/IUCN.UK.2021-3.RLTS.T15158247A123739456.en .
1 2 3 4 5 Atractus francoi at the Reptarium.cz Reptile Database. Accessed 8 October 2021.
↑ Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. pp. xiii + 296 pp. ISBN 978-1-4214-0135-5.

Oliveira, JCF; Gonzales, RC; Passos, P; Vrcibradic, D; Rocha, CFD (2020). "Non-Avian Reptiles of the state of Rio de Janeiro, Brazil: status of knowledge and commented list". Papéis Avulsos de Zoologia, Museu de Zoologia da Universidade de São Paulo. 60: 1–12.^: 7
Passos, P; Fernandes, R; Bérnils, RS; Moura-Leite, JC (2010). "Taxonomic revision of the Brazilian Atlantic Forest Atractus (Reptilia: Serpentes: Dipsadidae)". Zootaxa. 2364: 1–63. doi:10.11646/zootaxa.2364.1.1.^: 12–16
Wallach, V; Williams, KL; Boundy, J (2014). Snakes of the World: A Catalogue of Living and Extinct Species. Boca Raton, Florida: CRC Press. pp. 1, 209. ISBN 978-1-4822-0847-4.^: 73

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[iucn-1] 1 2 3 4 5 6 7 8 Silveira, A.L.; Prudente, A.L. da C.; Argôlo , A.J.S.; Abrahão, C.R.; Nogueira, C. de C.; Barbo, F.E.; Costa, G.C.; Pontes, G.M.F.; Colli, G.R.; Zaher, H. el D.; Borges-Martins, M.; Martins, M.R.C.; Oliveira , M.E.; Passos, P.G.H.; Bérnils, R.S.; Sawaya, R.J.; Cechin, C.T.Z.; Guedes da Costa, T.B. (2021). "Atractus francoi". IUCN Red List of Threatened Species . 2021 e.T15158247A123739456. doi: 10.2305/IUCN.UK.2021-3.RLTS.T15158247A123739456.en .

[RDB-2] 1 2 3 4 5 Atractus francoi at the Reptarium.cz Reptile Database. Accessed 8 October 2021.

[3] Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. pp. xiii + 296 pp. ISBN 978-1-4214-0135-5.

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