Del Norte Salamander vs. Western Red-backed Salamander
Two Plethodon salamanders that meet in the far southwest of Oregon. A: 18 to 20 (usually 18 or 19): a noticeably long trunk in the Del Norte Salamander; 16 to 17 (rarely 18): a shorter trunk in the Western Red-backed Salamander. B: Uneven, wavy, blurring into the dark sides (young; adults often plain) in the Del Norte Salamander; crisp, straight edges, running onto the tail in the Western Red-backed Salamander. C: Dark slate or black with fine light flecks in the Del Norte Salamander; slate grey with yellowish-white mottling in the Western Red-backed Salamander. Toes: the Del Norte's are short and thick, joined at the base by partial webbing; the Western Red-backed's are longer, slender and unwebbed (described, not shown; no open photo shows the toes clearly).
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Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.
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