northern zigzag salamander
northern zigzag salamander (Plethodon dorsalis)
Photo © Dr. Todd Pierson
Features and Behaviors
The northern zigzag salamander averages two and one-half to three and one-half inches in length. A zigzag, lobed, straight or wavy red or yellow stripe is present down the back. The belly is mottled with orange or red.
The northern zigzag salamander lives under rocks on wooded hillsides. In dry conditions it may retreat to crevices, caves or below ground. It is nocturnal. It breeds in fall, with eggs deposited under rocks or in rock crevices. The female guards the eggs until they hatch in late summer. The newly hatched larva is attached to a yolk sac for a day or so after hatching. After this time, the gills disappear, and the hatchlings are terrestrial, which is different than in most other amphibian species. They remain terrestrial as adults. The northern zigzag salamander feeds on worms, sowbugs, centipedes, insects and spiders.