Amphibians
Southern Two-Lined Salamander
Eurycea cirrigera · also called southern two-lined salamanders
Along a lowland stream in the southeastern United States, a southern two-lined salamander forages through leaf litter, occupying the warmer, lower-elevation share of a range its close mountain-dwelling relatives leave largely to it. Higher up, in cooler streams, a nearly identical relative takes over instead.
Overview
The southern two-lined salamander, Eurycea cirrigera, is a lungless amphibian native to forest and stream habitat across the southeastern United States. As the lower-elevation member of a widespread species complex, it demonstrates how closely related salamanders can divide a shared region by elevation and climate rather than obvious physical differences.
A common salamander with uncommon look-alikes
While genuinely abundant across much of the southeastern United States, the southern two-lined salamander is easily confused with several nearly identical relatives, distinguished mainly by which specific elevation and region of eastern North America each species has claimed.
Status
Least Concern — widespread and common across suitable forest and stream habitat throughout the southeastern United States.
Southern Two-Lined Salamander: common questions
How is the southern two-lined salamander different from the Blue Ridge two-lined salamander?
The southern two-lined salamander generally occupies lower-elevation, warmer habitat compared with the Blue Ridge two-lined salamander, which favours higher mountain elevations, meaning the two species are distinguished mainly by their specific elevation preference and geographic range within the broader two-lined salamander complex rather than by dramatic physical differences.
Why do male southern two-lined salamanders develop special features?
A male southern two-lined salamander develops enlarged jaw muscles and small nasal projections called cirri during the breeding season, features used to pass on courtship secretions to a female, a reproductive adaptation shared broadly across the entire two-lined salamander species complex.
Is the southern two-lined salamander common?
Yes, the southern two-lined salamander is one of the more commonly encountered salamander species within its range, remaining widespread across suitable forest and stream habitat throughout much of the southeastern United States, particularly at lower elevations favourable to the species.
Where does the southern two-lined salamander live?
The southern two-lined salamander is native to forest and stream habitat across much of the southeastern United States, generally at lower elevations than several of its mountain-dwelling relatives within the same two-lined salamander species complex.