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Allegheny Mountain Dusky Salamander vs. Eastern Red-backed Salamander

Both can carry a straight-edged stripe. An Allegheny Mountain Dusky has a pale line from the eye to the jaw and hind legs heavier than the front; a Red-backed has neither, and its legs are all about the same size.

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Allegheny Mountain Dusky Salamander

Desmognathus ochrophaeus

Eastern Red-backed Salamander

Plethodon cinereus
Allegheny Mountain Dusky Salamander vs. Eastern Red-backed Salamander: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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