The northern slimy salamander (Plethodon glutinosus) is a species of terrestrial plethodontid salamander found throughout much of the eastern two-thirds of the United States. (Wikipedia)

The western slimy salamander (Plethodon albagula) is a species of salamander found in two distinct populations in the United States, one from Missouri to Oklahoma, and Arkansas, and another in south-central Texas. It is sometimes referred to as the whitethroat slimy salamander, because it was once considered to be a subspecies of the northern slimy salamander, Plethodon glutinosus. (Wikipedia)

The Atlantic Coast slimy salamander (Plethodon chlorobryonis) is a species of salamander in the family Plethodontidae. It is endemic to the United States, where it is distributed throughout the Southeastern United States from southeastern Virginia to northern Georgia. It is largely distributed along the Atlantic coastal plain, although it enters the Piedmont in Virginia and South Carolina and enters the Blue Ridge Mountains in Georgia. Its habitat is largely restricted to bottomland (Wikipedia)

The southeastern slimy salamander (Plethodon grobmani) is a species of salamander in the family Plethodontidae. It is endemic to the United States, where it is distributed in the Southeastern United States from southern Georgia west to Alabama and south to central Florida. Its natural habitats are steephead valleys, maritime forests and bottomland hardwood forests. (Wikipedia)