Narrowhead Garter Snake vs. Checkered Garter Snake
They meet where streams below the Mogollon Rim drop into the desert. A: No stripes: paired dark (sometimes orange) spots down the back in the Narrowhead Garter Snake; a pale stripe down the back and checkerboard blotches in the Checkered Garter Snake. B: No pale crescent or blotches behind the head in the Narrowhead Garter Snake; a pale crescent behind the mouth and a dark blotch behind it in the Checkered Garter Snake. C: Long and narrow, with the eyes set high in the Narrowhead Garter Snake; normal snout in the Checkered Garter Snake.
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