Anguispira fergusoni is a native eastern North American land snail. They routinely climb trees, especially on warm and humid nights, probably in search of fungal food. Earlier this month, I wrote about one of them that unusually had gotten dormant on a tree.
Late Friday afternoon while searching for slugs, I saw this juvenile Anguispira fergusoni crawling on the trunk of a tree.
The shell diameter of this one was 5.5 mm. It has quite a bit of growing to do, for adults reach about 15 mm.