Compare two species

Relictual Slender Salamander vs. Black-bellied Slender Salamander

Their ranges do not meet: Breckenridge Mountain, Kern County (Relictual) vs the Transverse Ranges, coast and Tehachapis (Black-bellied). A: A reddish, yellowish or brown stripe (faint on big adults) in the Relictual Slender Salamander; dull and dark, the stripe faint or missing in the Black-bellied Slender Salamander. B: Short: usually 17 trunk vertebrae in the Relictual Slender Salamander; long and very slim in the Black-bellied Slender Salamander. C: Dark grey with fine pale flecks, not jet-black (lower side shown) in the Relictual Slender Salamander; jet-black, with fine white specks in the Black-bellied Slender Salamander. RANGE IS THE SUREST WAY TO TELL THEM APART: where you are decides which one it is; the rows below help confirm it.

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Relictual Slender Salamander

Batrachoseps relictus

Black-bellied Slender Salamander

Batrachoseps nigriventris

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

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