Tegus in Florida

It's common now to see the occasional news article on invasive species in Florida, particularly noting the Burmese pythons and monitor lizards. A recent column by Tom Palmer notes another big reptile has been seen there:

"Wildlife officials have noted another new lizard called the giant tegu, a South American species that can grow up to four feet long. Its diet includes bird eggs, and I've read there's some concern these lizards could invade gopher tortoise burrows and eat anything seeking refuge there except the tortoises.
"So far there are no tegu reports outside of Hillsborough County, but if these large lizards become established, it will only be a matter of time before they spread into Polk County."