El Tapayaxin: un emblemático reptil silvestre del oriente de la Ciudad de México

The tapayaxin (Phrynosoma orbiculare) is a lizard endemic to Mexico, with a small, flattened, spiny body, horns on its head, and a specialized diet of ants. In the Sierra de Santa Catarina (SSC) of the Mexico City, its populations are threatened by urbanization, land-use change, fires, and illegal logging. This study documents the existence of a wild population in the SSC, confirming its presence despite ecological isolation. Beyond its ecological value, the orbicularis has a deep historical significance: it was described by colonial naturalists as early as the 16th century and is present in the oral traditions of indigenous peoples. Proposing it as a flagship species seeks to protect its habitat, strengthen territorial identity, and foster environmental awareness. The orbicularis represents a link between the memory of the landscape and the sustainable future of the city.