Not all specimens upon which these maps are based have been verified. Light belly is mottled with black and light flecks. Cool, spring-fed headwater streams flowing through forests. Larvae are found in streams and spring seeps. During the day they take refuge in burrows or under logs, rocks, and leaves at edge of the stream.
Adults eat a variety of invertebrates and occasionally their own larvae.
Mating occurs from April through July. The female curls around and guards her eggs, which are laid in a burrow, moss, or depression under log, rock, or leaves near water. Larvae hatch in autumn and wriggle into water, where they feed and grow until transforming the following spring.