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Thamnophis ordinoides
Northwestern gartersnakes have the most variable scalation of any gartersnake in the Northwest. They usually have 7 upper labial scales per side (rarely 6 or 8), 8 lower labial scales (frequently 9, rarely 7 or 10), 17 mid-dorsal scale rows (rarely 15 or 19), 136-162 ventral scales, and 49-72 subcaudal scales. With respect to color pattern, Northwestern gartersnakes are considered to be the most variable snake in Washington or Oregon. (from "Reptiles of Washington and Oregon")
Spotted in an open meadow under light cover
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