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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 Tropiduridae
Bibliography of the genus Uracentron
Biodiversity of the family Tropiduridae


South American Spiny-tailed Iguanas, Thornytails


Sydamerikanske Tornhaleleguaner

1826 Uracentron Kaup (type species: Lacerta azurea Linnaeus 1758)
1829 Doryphorus Cuvier (type species: Stellio brevicaudata Latreille 1802; syn. Peters & Donoso-Barros 1970)
1830 Urocentron Wagler [substitute name for Uracentron Kaup 1826]
1835 Urocentrum Wiegmann [substitute name for Uracentron Kaup 1826]
1845 Uranocentron Gray [substitute name for Uracentron Kaup 1826]
Contents: 2 species, none of which are endemic.
Endemism: 0% 100%
Remarks: Frost (1992) proposed that Uracentron should be regarded as a synonym of Tropidurus. This proposal has not been adopted generally (e.g., Avila-Pires 1995), and he later reversed the arrangement (Frost, Rodrigues, Grant & Titus 2001).
Distribution: N. South America.
Reported from: Brazil (Acre, Amapa, Amazonas, Maranhao, Mato Grosso, Para [incl. Marajo Island], Rondonia), Colombia, Ecuador, French Guiana, Guyana, Peru, Surinam, Venezuela.

Uracentron azureum

Green Spiny-tailed Iguana

Grüner Dornschwanzleguan

Grøn Tornhaleleguan

1758 Lacerta azurea Linnaeus
Stellio azureus Latreille 1802
Uromastyx azureus Merrem 1820
Uracentron azureum Kaup 1826
Doryphorus azureus Cuvier 1829
Urocentron azurea Wagler 1830
Ophessa azureus Gray 1831
Tropidurus azureus Frost 1992
1802 Stellio brevicaudata Latreille (Peters & Donoso-Barros 1970)
1820 Uromastyx caeruleus Merrem [substitute name for Lacerta azurea Linnaeus 1758] (Peters & Donoso-Barros 1970)
1895 Urocentrum guentheri Boulenger (Greene 1977)
Uracentron azureum guentheri Greene 1977
1925 Uracentron werneri Mertens (Greene 1977)
Uracentron azureum werneri Greene 1977

Other common names:
azureum: Eastern Green Spiny-tailed Iguana
guentheri: Southern Green Spiny-tailed Iguana
Remarks: Includes three subspecies (azureum, guentheri, werneri) previously regarded as separate species. A single specimen has been recorded from Pernambuco, northeastern Brazil, but its presence there needs confirmation (Avila-Pires 1995). Correct publication year of the original description of guentheri is 1895, not 1894 (Costa & Bérnils 2015).
Distribution: Brazil (Amapa, Amazonas, Maranhao, Mato Grosso, Para [incl. Marajo Island], Rondonia), Colombia, French Guiana, Guyana, Peru, Surinam, Venezuela.

Uracentron flaviceps

Amazon Spiny-tailed Iguana, (Tropical Spiny-tailed Iguana)



1855 Doryphorus flaviceps Guichenot
Uranocentron flaviceps O'Shaughnessy 1881
Urocentron flaviceps Boulenger 1885
Uracentron flaviceps Mertens 1925
Tropidurus flaviceps Frost 1992
1871 Doryphorus castor Cope (Avila-Pires 1995)

Distribution: Brazil (Acre, Amazonas, Rondonia), Colombia, Ecuador, Peru.