Compare two species

Black-bellied Slender Salamander vs. Southern California Slender Salamander

Both live in the Los Angeles basin and the nearby foothills; their records overlap there. A: Dark slate to jet-black, with fine white flecks in the Black-bellied Slender Salamander; pale: light grey, buff or pinkish-cream in the Southern California Slender Salamander. B: Small and very slender, a narrow head (adults 1.2-1.7 in head and body) in the Black-bellied Slender Salamander; larger and stouter, a broader head (adults 1.6-2.4 in head and body) in the Southern California Slender Salamander. C: Dark, black or dark brown, often a reddish or bronze stripe in the Black-bellied Slender Salamander; paler, grey or brown in the Southern California Slender Salamander. Costal grooves overlap (18-20 vs 18-21). Limbs: pressed against the body, the toes of the Black-bellied stay 8-11 folds apart, the Southern California's 6-8.5.

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Black-bellied Slender Salamander

Batrachoseps nigriventris

Southern California Slender Salamander

Batrachoseps major

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

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