Thornscrub Hook-nosed Snake
Gyalopion quadrangulare
(Günther, 1893 in Salvin and Godman, 1885-1902)
JAY-loh-pee-on — kwah-dran-GOO-lar-eh
SSAR 9th Edition Comments:
There are no current SSAR comments for this taxon.
(, Museum Voucher)
(, Observation)
(, Literature Record),
(, Citizen Science),
( Fossil)
Open icons indicate questionable records; click on a marker to view details.
Occurrences:; 348 Total; 291 Museum; 57 Other
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Range maps are based on curated specimens and provided gratis by CNAH. - (Created by Travis W. Taggart; Version: 2024.11.21.09.22.50)
Download GeoJSON polygon range file: - 0.17 MB
Province/State Distribution:
United States: Arizona
Taxonomic Etymology:
A hook-nosed snake with a squarish or angular pattern reference.
Gyalopion — Likely derived from Greek gyalos (γυάλος), “rounded” or “curved,” and a diminutive suffix, referencing the snake’s curved or upturned snout.
quadrangulare — From Latin quadri- (“four”) and angulus (“angle”). Refers to a four-angled or squarish pattern, likely describing scale shape or dorsal blotches.
First instance(s) of published English names:
No historic English names have been assigned to this taxon yet.
Catalog of American Amphibians and Reptiles
The Reptile Database
GenBank
USGS - Nonindigenous Aquatic Species Database
Selected References:
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1885
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Gunther, Albert C. L. G. Biologia Centrali-Américana. Reptilia and Batrachia. 1885-1902. Taylor and Francis, London. 326pp.
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1975
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Hardy, Laurence M. A systematic revision of the colubrid snake genus Gyalopion. Journal of Herpetology 9(1):107-132
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1976
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Hardy, Laurence M. Gyalopion, G. canum, G. quadrangularis.. Catalogue of American Amphibians and Reptiles (182):1-4
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2016
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Rabosky, Davis, Alison R., Christian L. Cox, Daniel L. Rabosky, Pascal O. Title, Iris A. Holmes, Anat Feldman, and Jimmy A. McGuire. Coral snakes predict the evolution of mimicry
across New World snakes. Nature Communications 7(11484):1-9
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