Although this record seems to be just out-of-range, I've never found a northern dusky in a swamp like this (only in or adjacent to clear streams/springs)...added a panorama of the swamp 02 Apr 2016.
Found in spring fed stream in a high quality American Beech/southern Magnolia slope forest.
location private. Not sure on the most up to date name for these guys here in TX?
The southern dusky salamander (Desmognathus auriculatus) is a species of salamander native to the coastal regions of the southeastern United States, from Virginia to Texas. Older sources often refer to it as the eared triton.