Home - Taxonomy - Geography - Biodiversity - Literature - Purchase RepFocus Recent updates
Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: December 31st, 2022.

Taxonomy of the family Anguidae
Bibliography of the genus Elgaria
Biodiversity of the family Anguidae


Western Alligator Lizards

Westliche Alligatorschleichen

Vestlige Alligatorøgler

1838 Elgaria Gray (type species: Cordylus multi-carinatus Blainville 1835)
1843 Trachypeltis Fitzinger (type species: Cordylus multi-carinatus Blainville 1835; syn. Good 1988)
Contents: 8 species, of which 5 (62.5%) are endemic.
Endemism: 0% 100%
Remarks: Previously included in Gerrhonotus (se remarks under that genus).
Distribution: W. North America.
Reported from: Canada (British Columbia [incl. Vancouver Island]), Mexico (Aguascalientes, Baja California Norte [incl. Isla Cedros, Islas Coronados (Isla Coronado Norte, Isla Coronado Sur)], Baja California Sur, Chihuahua, Colima, Durango, Jalisco, Michoacan, Nayarit, Sinaloa, Sonora, Zacatecas), USA (Arizona, California [incl. Channel Islands], Idaho, Montana, Nevada, New Mexico, Oregon, Washington).

Elgaria cedrosensis

Cedros Island Alligator Lizard



1934 Gerrhonotus cedrosensis Fitch
Elgaria cedrosensis Tihen 1949
Elgaria paucicarinata cedrosensis Grismer 1988

Remarks: Revalidated as a separate species by Grismer & Hollingsworth (2001).
Distribution: Mexico (Baja California Norte [incl. Isla Cedros]).

Elgaria coerulea

Northern Alligator Lizard

Nördliche Alligatorschleiche

Nordlig Alligatorøgle

1828 Gerrhonotus coeruleus Wiegmann
Elgaria coerulea Tihen 1949
1831 Gerrhonotus burnettii Gray (Schmidt 1953)
1852 Elgaria formosa Baird & Girard (Schmidt 1953)
1852 Elgaria principis Baird & Girard (Wermuth 1969)
Gerrhonotus coeruleus principis Fitch 1934
Elgaria coerulea principis Tihen 1949
1885 Gerrhonotus caeruleus Boulenger [substitute name for Gerrhonotus coeruleus Wiegmann 1828] (Wermuth 1969)
1893 Gerrhonotus scincicauda palmeri Stejneger (Wermuth 1969)
Gerrhonotus coeruleus palmeri Fitch 1934
Elgaria coerulea palmeri Tihen 1949
1934 Gerrhonotus coeruleus shastensis Fitch
Elgaria coerulea shastensis Tihen 1949
1945 Gerrhonotus coeruleus utahensis Tihen
Elgaria utahensis Tihen 1949

Other common names:
coerulea: San Francisco Alligator Lizard
palmeri: Sierra Alligator Lizard
principis: Northwestern Alligator Lizard
shastensis: Shasta Alligator Lizard
Distribution: Canada (British Columbia [incl. Vancouver Island]), USA (California, Idaho, Montana, Nevada, Oregon, Washington).

Elgaria kingii

Madrean Alligator Lizard, Sonoran Alligator Lizard

Mexikanische Alligatorschleiche, Arizona-Alligatorschleiche


1838 Elgaria kingii Gray
Gerrhonotus kingii O'Shaughnessy 1873
1839 Gerrhonotus multifasciatus Duméril & Bibron (Tihen 1948)
1852 Elgaria marginata Hallowell (Tihen 1948)
1852 Elgaria nobilis Baird & Girard (Wermuth 1969)
Elgaria kingii nobilis Tihen 1949
1962 Gerrhonotus kingi ferrugineus Webb
Elgaria kingi ferruginea Liner 1994
2003 Elgaria usafa Smith, Lemos-Espinal, Chiszar & Ingrasci (Bryson, Smith & Lemos-Espinal 2005; Lemos-Espinal & Smith 2007)

Other common names:
ferruginea: Rusty Alligator Lizard
kingi: Common Madrean Alligator Lizard
nobilis: Arizona Alligator Lizard
Distribution: Mexico (Aguascalientes, Chihuahua, Colima, Durango, Jalisco, Michoacan, Nayarit, Sinaloa, Sonora, Zacatecas), USA (Arizona, New Mexico).

Elgaria multicarinata

Southern Alligator Lizard

Südliche Alligatorschleiche

Sydlig Alligatorøgle

1835 Cordylus multi-carinatus Blainville
Gerrhonotus multi-carinatus Fitch 1934
Elgaria multicarinata Tihen 1949
1845 Gerrhonotus wiegmanni Gray [ex errore] (Schmidt 1953)
1849 Tropidolepis scincicauda Skilton (Wermuth 1969)
Gerrhonotus multi-carinatus scincicauda Fitch 1934
Elgaria multicarinata scincicauda Tihen 1949
1852 Elgaria grandis Baird & Girard (Schmidt 1953)
1858 Gerrhonotus webbii Baird (Wermuth 1969)
Gerrhonotus multi-carinatus webbi Fitch 1934
Elgaria multicarinata webbi Smith & Taylor 1950
1905 Gerrhonotus scincicauda ignavus Van Denburgh (Grismer 2001)
Gerrhonotus multicarinatus ignavus Zweifel 1958
Elgaria multicarinata ignava Liner 1994

Other common names:
ignava: San Martin Alligator Lizard
multicarinata: California Alligator Lizard
scincicauda: Oregon Alligator Lizard
webbi: San Diego Alligator Lizard
Remarks: Previously included nana.
Introduced to: USA (Nevada).
Distribution: Mexico (Baja California Norte), USA (California [incl. Channel Islands], Oregon, Washington).

Elgaria multicarinata
© Rune Midtgaard

Elgaria nana

Los Coronados Alligator Lizard



1934 Gerrhonotus scincicauda nanus Fitch
Gerrhonotus multi-carinatus nanus Fitch 1939
Elgaria multicarinata nana Tihen 1949
Elgaria nana Grismer 2001

Remarks: Sometimes regarded as a subspecies of multicarinata (e.g., Wermuth 1969: Leavitt, Marion, Hollingsworth & Reeder 2017).
Distribution: Mexico (Baja California Norte [Islas Coronados (Isla Coronado Norte, Isla Coronado Sur)]).

Elgaria panamintina

Panamint Alligator Lizard



1958 Gerrhonotus panamintinus Stebbins
Elgaria panamintina Waddick & Smith 1974

Distribution: USA (California).

Elgaria paucicarinata

San Lucan Alligator Lizard

San Lucas-Alligatorschleiche

San Lucas-alligatorøgle

1934 Gerrhonotus paucicarinatus Fitch
Elgaria paucicarinata Tihen 1949

Remarks: Previously included cedrosensis (e.g., Grismer 1988).
Distribution: Mexico (Baja California Sur).

Elgaria velazquezi

Central Baja California Alligator Lizard, Central Peninsular Alligator Lizard

Zentral-Niederkalifornische Alligatorschleiche

Baja California-alligatorøgle

2001 Elgaria velazquezi Grismer & Hollingsworth

Distribution: Mexico (Baja California Sur).