Northern Dusky Salamander

Scientific Name: Desmognathus fuscus fuscus
Size: 2.5-5 inches (6.5-13 cm) in length
PA Status: Abundant

Habitat Type:
Found near or in streams, seepage areas, and springs. may be found under logs, rocks and other cover.

Colorations:

  • The dorsal background color is highly variable and can range from yellowish to greyish brown or dark brown with a broad light brown dorsal stripe that contains variable dark markings; it is also bordered by dark grey or brown light to heavy mottling. The dorsal stripe extends to the anterior portion of the tail.
  • The sides of the body are mottled.
  • The ventral is light cream with light to heavy mottling.
  • Older individuals may have and obscure dorsal strips and pattern and become uniform greyish brown in color.
  • Adults may also have no dorsal pattern and be uniform yellow to greyish brown.
  • Duskys are easily identified by the light line that extends from the eye to the angel of the jaw.

Characteristics:

  • Small to medium-sized species; semi-aquatic
  • Well-proportioned species
  • The limbs are well-developed
  • The tail is laterally compressed with a distinct dorsal keel and somewhat triangular in the cross-section.
  • The toe tips lack cornifications.
  • 14 costal grooves.

Juvenile coloration and characteristics:

  • The dorsal is vividly patterned with 5 to 8 pairs of alternating yellow spots that are connected by a wavy dark band that continues on to the dorsal of the tail.
  • The sides typically have a dark dorsolateral stripe that is either wavy or straight or the dorsum may be uniformed in color or blotched with brown to reddish brown.

Hatchlings and Larvae coloration and characteristics:

  • The body is rounded
  • The limbs are well-developed.
    the tail is laterally compressed.
  • A caudal fin is present.
  • The head is large and distinct from the body.

Confused with:

  • Seal Salamander
  • Mountain Dusky Salamander

Coloration/Pattern Photos:
Adults
Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Jason Poston
Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Jason Poston
Northern Dusky Salamander - Blue Spots- By: Jeff Hankey Northern Dusky Salamander - Blue Spots- By: Jeff Hankey Northern Dusky Salamander - By: Jason Poston
Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Jason Poston
Northern Dusky Salamander - By: Tom Diez Northern Dusky Salamander - By: Tom Diez Northern Dusky Salamander - By: Jason Poston
Northern Dusky Salamander - By: Jeff Hankey Northern Dusky Salamander - By: Jeff Hankey
Juvenile
Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Jason Poston
Northern Dusky Salamander - By: Jason Poston
Larvae
Northern Dusky Salamander - By: Jason Poston
Northern Dusky Salamander - By: Jason Poston Northern Dusky Salamander - By: Billy Brown

Range Map:

References:

  • Hulse, C. and McCoy C. J. and Ellen Censky ,1998. Amphibians and Reptiles of Pennsylvania and the Northeast. 75-78pp.
  • Petranka, James W. ,1998. Salamanders of the United States and Canada. 173-181pp.

Photo Credits:

  • Jason Poston
  • Billy Brown
  • Jeff Hankey
  • Tom Diez