Plethodon richmondi is an eastern member of the cinereus group. Like other P. cinereus species, P. richmondi is sometimes described as a "worm with legs." The rounded tail is slightly compressed along the sides and it accounts for almost half of the species TL, which ranges from 65-143 mm. Adult female individuals are usually larger than adult males, but adult males have cloacal papillae and large mental glands that are lacking in adult females. The dorsal region and sides are dark brown, almost black, and sprinkled with various colored spots, from gold to greenish-gold to silvery-white. Along the ventral area, the dark coloration predominates. The only area of the species that is light in color is the throat region, although this coloration creates a mottled effect. The throat also has a developed gular fold.

When they hatch, P. richmondi individuals are light gray above with large white spots on a black network along the dorsum. They average about 14-15 mm SVL (Regester 2000).

 
Etymology:

The species is named in honor of Neil D. Richmond, a Virginia-born herpetologist (Regester 2000).