Desmognathus

The genus Desmognathus refers to a group of small, dark salamanders belonging to the family Plethodontidae, commonly known as lungless salamanders. These amphibians are widely distributed throughout the eastern United States.12

Lungless salamanders, including those in the Desmognathus genus, are characterized by their reliance on cutaneous respiration, meaning they absorb oxygen through their moist skin and the mucous membranes in their mouths and throats. They possess a pair of nasolabial grooves that aid in detecting scents, which are crucial for locating food, sensing danger, and social behaviors.2

The family Plethodontidae is divided into two subfamilies, Desmognathinae and Plethodontinae. The Desmognathinae subfamily includes the genera Desmognathus and Phaeognathus, and is exclusively found in eastern North America. These salamanders exhibit a range of lifestyles, from fully terrestrial to aquatic.2