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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Colubridae
Subfamilia: Sibynophiinae
Genus: Scaphiodontophis
Species: Scaphiodontophis annulatus
Subspecies (4): S. a. annulatus – S. a. dugandi – S. a. nothus – S. a. hondurensis

Scaphiodontophis annulatus (Duméril, Bibron & Duméril 1854)

Holotype: MNHN-RA-0.7283.

Type locality: “Coban (Haute-Vera-Paz [=Alta Verapaz])”, Guatemala.

Enicognathus annulatus Duméril, Bibron & Duméril 1854: 335 [original combination]
Scaphiodontophis annulatus — Taylor & Smith, 1943: 303 [subsequent combination]

Primary references

Duméril, A.M.C., Bibron, G. & Duméril, A.H.A. 1854. Erpétologie générale ou histoire naturelle complète des reptiles. Tome septième. Deuxième partie, comprenant l'histoire des serpents venimeux. Librarie encyclopédique de Roret: Paris, France. i-xii + 781–1536 pp. BHL Reference page.
Taylor, E.H. & Smith, H.M. 1943. A review of American Sibynophine snakes, with a proposal of a new genus. The University of Kansas science bulletin 29(6): 301–337. BHL


Uetz, P. & Hallermann, J. 2022. Scaphiodontophis annulatus. The Reptile Database. Accessed on 8 May 2018.
Mandujano, R.C. & López-Luna, M.A. 2013. IUCN: Scaphiodontophis annulatus (Least Concern). The IUCN Red List of Threatened Species 2013: e.T198404A2525590. DOI: 10.2305/IUCN.UK.2013-2.RLTS.T198404A2525590.en

Vernacular names
English: Guatemala Neckband Snake

Scaphiodontophis annulatus, commonly known as the Guatemala neckband snake, is a species of snake in the family Colubridae. The species is native to southern Mexico, Central America, and Colombia. There are four recognized subspecies.

Geographic distribution

S. annulatus is found in the Mexican states of Puebla and Yucatán, and in Belize, Colombia, El Salvador, Guatemala, Honduras, and Nicaragua.[2]

The preferred natural habitat of S. annulatus is forest at altitudes from sea level to 1,200 m (3,900 ft).[1]

The following four subspecies are recognized as being valid.[2]

Scaphiodontophis annulatus annulatus (A.M.C. Duméril, Bibron & A.H.A. Duméril, 1854)
Scaphiodontophis annulatus dugandi Roze, 1969
Scaphiodontophis annulatus hondurensis (Schmidt, 1936)
Scaphiodontophis annulatus nothus Taylor & H.M. Smith, 1943


S. annulatus is oviparous.[2]

The subspecific name, dugandi, is in honor of Colombian biologist Armando Dugand.[3]

Mandujano RC, López-Luna MA (2013). "Scaphiodontophis annulatus ". IUCN Red List of Threatened Species. doi:10.2305/IUCN.UK.2013-2.RLTS.T198404A2525590.en.
Scaphiodontophis annulatus at the Reptile Database. Accessed 26 December 2018.

Roze (1969).

Further reading

Duméril A-M-C, Bibron G, Duméril A[-H-A] (1854). Erpétologie générale ou histoire naturelle complète des reptiles. Tome septième [Volume 7]. Première partie. Comprenant l'histoire des serpents non venimeux. Paris: Roret. xvi + 780 pp. (Enicognathus annulatus, new species, pp. 335–336). (in French).
Heimes P (2016). Snakes of Mexico: Herpetofauna Mexicana Vol. I. Frankfurt am Main, Germany: Chimaira. 572 pp. ISBN 978-3899731002.
Henderson RW (1984). "Scaphiodontophis (Serpentes: Colubridae): Natural History and Test of a Mimicry-Related Hypothesis". pp. 185–194. In: Seigel RA, Hunt LE, Knight JL, Malaret L, Zuschlag NL (1984). Vertebrate Ecology and Systematics: A Tribute to Henry S. Fitch. University of Kansas Museum of Natural History Special Publication No. 10. Lawrence: University of Kansas. viii + 278 pp.
Roze JA (1969). "Una nueva coral falsa del genero Scaphiodontophis (Serpentes: Colubridae) de Colombia ". Caldasia 10: 355–363. (Scaphiodontophis dugandi, new species, figures 1–3). (in Spanish, with an English summary).
Schmidt KP (1936). "New Amphibians and Reptiles in the Museum of Comparative Zoology". Proceedings of the Biological Society of Washington 49: 43–50. (Sibynophis annulatus hondurensis, new subspecies, pp. 48–49).
Taylor EH, Smith HM (1943). "A Review of the American Sibynophine Snakes, with the Proposal of a New Genus". University of Kansas Science Bulletin 29: 301–337 + Plates XXI–XXV. (Scaphiodontophis nothus, new species, pp. 320–322, Figure 8 + Plate XXIII, figure 2).


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