Tropidurus

Species in the genus Tropidurus are found on the South American mainland, especially in the Amazon Rainforest, but also in more arid regions.

No widely common name is used solely for species of the genus Tropidurus. In their native range, they are simply called "iguanas" as are most similar animals. If anything, the Brazilian term calango is used to particularly refer to lizards of the genus Tropidurus.

The genus Tropidurus contains 30 described species, but new ones continue to be discovered. An additional seven species—the Galápagos lava lizards endemic to the Galápagos Islands—are sometimes placed here, too, but more commonly separated in the genus Microlophus, instead. Similarly, the green thornytail iguana and tropical thorny iguana are now often separated into the minor, but probably distinct Uracentron lineage, instead. In this article, these two genera are kept separate, while Platynotus, Strobilurus, and Tapinurus are included in Tropidurus.

Males and females of all Tropidurus species are marked differently. The male is usually much larger than the female, and his body is more brightly coloured and distinctly patterned. The typical size of Tropidurus lizards varies greatly from habitat to habitat as does the pattern of body markings, even among individuals of the same species. Like many lizards, they show changes of colour with mood and temperature.

These species are recognized as being valid:[2]

• Tropidurus arenarius (Tschudi, 1845)
• Tropidurus azurduyae A.L.G. Carvalho, Rivas, Céspedes & Rodrigues, 2018
• Tropidurus bogerti Roze, 1958
• Tropidurus callathelys M.B. Harvey & Gutberlet, 1998
• Tropidurus catalanensis Gudynas & Skuk, 1983
• Tropidurus chromatops M.B. Harvey & Gutberlet, 1998
• Tropidurus cocorobensis Rodrigues, 1987
• Tropidurus divaricatus Rodrigues, 1987
• Tropidurus erythrocephalus Rodrigues, 1987
• Tropidurus etheridgei Cei, 1982
• Tropidurus guarani Álvarez, Cei & Scolaro, 1994
• Tropidurus helenae (Manzani & Abe, 1990)
• Tropidurus hispidus (Spix, 1825)
• Tropidurus hygomi J.T. Reinhardt & Lütken, 1861
• Tropidurus insulanus Rodrigues, 1987
• Tropidurus itambere Rodrigues, 1987
• Tropidurus jaguaribanus Passos, Lima & Borges-Nojosa, 2011[3]
• Tropidurus lagunablanca A.L.G. Carvalho, 2016[4]
• Tropidurus melanopleurus Boulenger, 1902
• Tropidurus montanus Rodrigues, 1987
• Tropidurus mucujensis Rodrigues, 1987
• Tropidurus nanuzae Rodrigues, 1981
• Tropidurus oreadicus Rodrigues, 1987
• Tropidurus pinima (Rodrigues, 1984)
• Tropidurus psammonastes Rodrigues, Kasahara & Yonenaga-Yasuda, 1988
• Tropidurus semitaeniatus (Spix, 1825)
• Tropidurus sertanejo A.L.G. Carvalho, et al., 2016[5]
• Tropidurus spinulosus (Cope, 1862)
• Tropidurus torquatus (Wied-Neuwied), 1820
• Tropidurus xanthochilus M.B. Harvey & Gutberlet, 1998

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Tropidurus.

• Wied-Neuwied M (1824). "Verzeichniss der Amphibien, welche in zweyten Bande der Naturgeschichte Brasiliens vom Prinz Max von Neuwied werden beschrieben werden. (Nach Merrems Versuch eines Systems Amphibien) ". Isis von Oken 14: 661-673. (Tropidurus, new genus, p. 663). (in German).