Gyalopion quadrangulare

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: Colubrinae
Genus: Gyalopion
Species: Gyalopion quadrangulare
Subspecies: G. q. desertorum – G. q. quadrangulare
Name

Gyalopion quadrangulare (Günther, 1890)

Holotype: BMNH 1946.1.1.75 (former 83.4.5.36), ♀.

Type locality: “Mexico, Presidio de Mazatlan in Sinaloa.”
Combinations

Ficimia quadrangularis Günther, 1893: 99 [original combination]
Gyalopion quadrangularis Günther, 1893 [subsequent combination]
Gyalopion quadrangularis — Stebbins, 1985: 216 [subsequent combination]
Gyalopion quadrangulare — Liner, 1994 [subsequent combination]
Gyalopion quadrangulare — Crother, 2000 [subsequent combination]

References
Primary references

Günther, A.C.L.G. 1885–1902. Biologia Centrali-Americana. Volume 7. Reptilia and Batrachia. R.H. Porter: London. 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

Uetz, P. & Hallermann, J. 2022. Gyalopion quadrangulare. The Reptile Database. Accessed on 25 April 2018.
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

Vernacular names
English: Thornscrub or Desert Hooknose Snake