Gyalopion quadrangulare

Gyalopion quadrangulare

Taxonavigation

Taxonavigation: Colubroidea

Superregnum: Eukaryota Cladus: Amorphea Cladus: Obazoa Cladus: Opisthokonta Cladus: Holozoa Cladus: Filozoa Cladus: Choanozoa Regnum: Animalia Subregnum: Eumetazoa Cladus: ParaHoxozoa Cladus: Bilateria Cladus: Nephrozoa Superphylum: Deuterostomia Phylum: Chordata Cladus: Olfactores Subphylum: Vertebrata Infraphylum: Gnathostomata Cladus: Eugnathostomata Cladus: Osteichthyes Cladus: Sarcopterygii Cladus: Rhipidistia Cladus: Tetrapodomorpha Cladus: Eotetrapodiformes Cladus: Elpistostegalia Cladus: Stegocephali Cladus: Tetrapoda Cladus: Reptiliomorpha Cladus: Amniota Cladus: Sauropsida Classis: Reptilia Cladus: Eureptilia Cladus: Romeriida Cladus: Diapsida Cladus: Neodiapsida Cladus: Sauria Cladus: Lepidosauromorpha Superordo: Lepidosauria Ordo: Squamata Cladus: Unidentata, Episquamata Cladus: Toxicofera Subordo: Serpentes Cladus: Caenophidia Superfamilia: Colubroidea

Familia: Colubridae
Subfamilia: Colubrinae
Genus: Gyalopion
Species: Gyalopion quadrangulare

Name

Gyalopion quadrangulare (Günther, 1890)

• Holotype: BMNH 1946.1.1.75 (formerly 83.4.5.36), ♀, collected by A. Forrer in 1883.
• Type locality: “Mexico, Presidio de Mazatlan in Sinaloa”.

Combinations

• Ficimia quadrangularis Günther, 1893: 99 [original combination]
• Gyalopion quadrangularis — Smith & Taylor, 1941 [subsequent combination]

Synonyms

• Ficimia desertorum Taylor, 1936

References

Primary references

• Günther, A.C.L.G. 1885–1902. Biologia Centrali-Americana. Volume 7. Reptilia and Batrachia. R.H. Porter: London. i–xx + 326 pp., 76 pls. BHL Reference page. 

Additional references

• Stebbins, R.C. 1985. A Field Guide to Western Reptiles and Amphibians, 2nd ed. Houghton Mifflin, Boston.
• Collins J. T. 1997. Herpetological Circular 25: 1–40.

Links

• Hammerson, G.A., Frost, D.R. & Gadsden, H. 2007. IUCN: Gyalopion quadrangulare  (Least Concern). The IUCN Red List of Threatened Species 2007: e.T63818A12718380. DOI: 10.2305/IUCN.UK.2007.RLTS.T63818A12718380.en. Accessed on 12 January 2026.

Vernacular names

• English: Thornscrub or Desert Hooknose Snake