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Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: December 31st, 2022.

Taxonomy of the family Iguanidae
Bibliography of the genus Sauromalus
Biodiversity of the family Iguanidae


North American Chuckwallas


Nordamerikanske Chuckwallaer

1856 Sauromalus Dumeril (type species: Sauromalus ater Dumeril 1856)
1858 Euphryne Baird (type species: Euphryne obesus Baird 1858; syn. Hollingsworth 1998)
Contents: 5 species, of which 4 (80.0%) are endemic.
Endemism: 0% 100%
Distribution: SW. USA, NW. Mexico.
Reported from: Mexico (Baja California Norte, Baja California Sur [incl. Isla Carmen, Isla Santa Catalina], Sonora [incl. Isla San Esteban]), USA (Arizona, California, Nevada, Utah).

Sauromalus ater

Common Chuckwalla

Gewöhnliche Chuckwalla

Almindelig Chuckwalla

1856 Sauromalus ater Duméril
1858 Euphryne obesus Baird (Hollingsworth 1998)
Sauromalus obesus Shaw 1945
1919 Sauromalus interbrachialis Dickerson (Hollingsworth 1998)
1919 Sauromalus townsendi Dickerson (Hollingsworth 1998)
Sauromalus obesus townsendi Shaw 1945
1945 Sauromalus australis Shaw (Hollingsworth 1998)
1945 Sauromalus obesus tumidus Shaw (Hollingsworth 1998)
1958 Sauromalus shawi Cliff (Hollingsworth 1998)
Sauromalus ater shawi Soulé & Sloan 1966
1964 Sauromalus obesus multiforaminatus Tanner & Avery (Hollingsworth 1998)

Other common names:
ater: Espiritu Santo Island Chuckwalla, Northern Chuckwalla
australis: Peninsular Chuckwalla
multiforaminatus: Glen Canyon Chuckwalla
obesus: Western Chuckwalla
shawi: San Marcos Island Chuckwalla
townsendi: Guyamas Chuckwalla, Sonoran Island Chuckwalla
tumidus: Arizona Chuckwalla
Remarks: Liner & Casas-Andreu (eds.) (2008) listed australis as a separate species.
Distribution: Mexico (Baja California Norte, Baja California Sur, Sonora), USA (Arizona, California, Nevada, Utah).

Sauromalus ater
© Rune Midtgaard

Sauromalus hispidus

Spiny Chuckwalla, Black Chuckwalla

Dorniger Chuckwalla

Tornet Chuckwalla

1891 Sauromalus hispidus Stejneger

Distribution: Mexico (Baja California Norte).

Sauromalus klauberi

Spotted Chuckwalla

Gefleckte Chuckwalla

Plettet Chuckwalla

1941 Sauromalus klauberi Shaw
Sauromalus ater klauberi Soulé & Sloan 1966

Remarks: Revalidated as a separate species by Murphy (1983) and Hollingsworth (1998).
Distribution: Mexico (Baja California Sur: Isla Santa Catalina).

Sauromalus slevini

Monserrat Island Chuckwalla, (Slevin's Chuckwalla)



1922 Sauromalus slevini Van Denburgh
Sauromalus ater slevini Robinson 1974

Remarks: Revalidated as a separate species by Etheridge (1982).
Distribution: Mexico (Baja California Sur [incl. Isla Carmen]).

Sauromalus varius

Piebald Chuckwalla, San Esteban Island Chuckwalla

Bunte Chuckwalla

Broget Chuckwalla

1919 Sauromalus varius Dickerson

Introduced to: Mexico (Sonora: Roca Lobos).
Distribution: Mexico (Sonora: Isla San Esteban).