New Lizard Species Documented in Florida
Recent surveys confirm several nonnative lizard species expanding across Florida, including the Argentine black and white tegu and the green iguana. The Florida Fish and Wildlife Conservation Commission (FWC) lists these species as established populations with growing ranges. Researchers from the University of Florida track new sightings using public reports and field surveys, updating distribution maps annually here.
The Argentine tegu, a large omnivorous lizard, now occupies areas in central and south Florida, while green iguanas remain concentrated in Miami-Dade and Broward counties. FWC data shows tegus detected in over 20 counties since 2010, with new records each year. These findings reflect both deliberate pet releases and accidental escapes from captivity.
Ecological and Economic Impact of Invasive Lizards
Invasive lizards in Florida compete with native species for food and habitat. Tegus prey on eggs of ground-nesting birds and reptiles, affecting species like the American alligator and gopher tortoise. The FWC notes that tegus can also damage agricultural equipment and landscaping, leading to economic costs for homeowners and farmers here.
Green iguanas cause structural damage by burrowing into levees, seawalls, and sidewalks. Their feeding habits can harm ornamental plants and fruit trees in residential areas. Local governments in South Florida allocate resources for removal programs, and some homeowners seek professional wildlife services to manage iguana populations effectively.
Regulatory Responses and Public Reporting
Florida law prohibits the importation and possession of certain nonnative reptiles, including tegus, without a permit. FWC enforces these rules through inspections and penalties for illegal releases. The commission encourages residents to report lizard sightings via the IveGot1 app and website, which helps scientists map new invasions in real time here.
Removal programs funded by state and federal grants target high-impact areas. The FWC partners with local wildlife control agencies and universities to conduct trapping efforts and public education campaigns. These initiatives aim to reduce lizard numbers and limit further spread into new regions of the state here.