Balsas Spiny-tailed Iguana
- The main threat to the species is habitat loss.
- This iguana is also collected for the international pet trade. However it is not believed that significant numbers are collected so this is not a major threat to the population.
Ctenosaura clarki, commonly known as the Balsas armed lizard, Michoacán dwarf spiny-tailed iguana, or nopiche, is a species of lizard in the family Iguanidae. The specific name, clarki, is in honor of Dr. Herbert Charles Clark (1877-1960), director of medical research and laboratories, United Fruit Co., for his support of the herpetological collection of the Museum of Comparative Zoology, Harvard University.
Ctenosaura clarki is endemic to the Balsas dry forests in the state of Michoacán in western Mexico. C. clarki is threatened by habitat loss.