About 15 subspecies have been named. Following Ernst et al., this is the Meso-American slider T. s. venusta which ranges from Veracruz, Mexico, through Honduras (including the Yucatán Peninsula) in the Atlantic and Gulf drainages. Note that its supratemporal stripe reaches the eye.
The official Belize checklist follows Ernst et al. calling this Trachemys scripta but some authors (e.g. Savage in The Amphibians and Reptiles of Costa Rica) restrict that form to NE Mexico and the central and eastern United States. These turtles were formerly placed in the genus Chrysemys, with the southern Mexican and Central American turtles considered a separate species C. ornata, the Tropical Slider by Savage.
Digiscoped with Panasonic DMC-LZ5 | Nikon FieldScope III | 30XWA | hand-held (no adapter)