Atractus roulei DESPAX, 1910
Can you confirm these amateur observations of Atractus roulei?
Atractus roulei
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Roule's Ground Snake E: Pyron’s Groundsnake [pyroni] S: Tierrera de Pyron [pyroni] |
| Synonym | Atractus roulei DESPAX 1910: 370 Atractus roulei — PETERS 1960 Atractus roulei — PASSOS & ARREDONDO 2009 Atractus roulei — WALLACH et al. 2014: 80 Atractus pyroni ARTEAGA et al. 2017 Atractus roulei — PASSOS et al. 2022 |
| Distribution | SW Ecuador, Peru (Cordillera de Huancabamba) Type locality: Alausi, Ecuador, 2350 m elevation. pyroni: Ecuador; Type locality: between Balzapamba and Bilován, province of Bolívar, Ecuador (S1.83601, W79.13322; 2026 m elevation). |
| Reproduction | oviparous |
| Types | Holotype: MNHN-RA 1906.0243 Holotype: MZUTI 5107 (Fig. 7), adult male collected by José L. Vieira-Fernandes and Carlos Durán on May 23, 2016 [pyroni] |
| Diagnosis | Diagnosis: A well-demarcated species of Atractus most obviously similar to A . carrioni of southeastern Ecuador. Readily distinguished from other Atractus by: (1) 15 scale rows; (2) long loreal; (3) maxillary teeth, 10-11; (4) ventrals in males, 140-145 (143), in females, 145-149 (148); and (5) uniform dark brown dorsally [from SAVAGE 1960]. |
| Comment | Similar species: A. carrioni. The two species differ in the condition of the loreal shield (present in roulei, absent in carrioni); A. lehmanni (for examples of misidentifications see Passos et al. 2022). Arteaga et al. 2022 re-identified several specimens of “A. roulei” as a new species, A. michaelsabini. Species group: Arteaga et al. 2017 defined the roulei species group as derived from a molecular phylogeny, to contain Atractus carrioni, A. lehmanni, A. pyroni sp. n. and A. roulei. Synonymy: Passos et al. 2022 proposed synonymized A. pyroni with A. roulei. Distribution: see map in Arteaga et al. 2022: 184 (Fig. 2) |
| Etymology | Named after Louis Roule, “Docteur es sciences. Docteur en médecine. Professeur à la Faculté des Sciences de Toulouse, a été nommé Professeur de Zoologie (Reptiles et Poissons), en remplacement de M. Léon Vaillant, admis à la retraite (Décret présidentiel du 8 juillet 1910)”. A. pyroni was named after R. Alexander Pyron, one of the most prolific contemporary herpetologists, in recognition of his invaluable contribution to systematics and evolution of the world’s reptiles. |
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