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Relictual Slender Salamander vs. Gregarious Slender Salamander

Their records meet around the lower Kern River. A: Larger in the Relictual Slender Salamander; shorter and narrower in the Gregarious Slender Salamander. B: Short: usually 17 trunk vertebrae in the Relictual Slender Salamander; usually 18 (males) or 19 (females) in the Gregarious Slender Salamander. Adult male Gregarious have a chin gland that Relictual males lack (in hand only).

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Relictual Slender Salamander

Batrachoseps relictus

Gregarious Slender Salamander

Batrachoseps gregarius
Relictual Slender Salamander vs. Gregarious Slender 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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