Is This Treefrog a Long Way from Home?

Treefrog found on a farm in eastern Kansas.

We recently received the photograph above from Steven Hallstrom, who owns and operates a sustainable farm just north of Tonganoxie. These photographs are of a frog that Steven observed in abundance earlier this season. Steven notes this frogs apparent similarity with the Pine Barrens Treefrog (Hyla andersonii) and is wondering if this identification could be correct given that this species isn't known from anywhere even close to Kansas (it occurs only in a few isolated patches of pine barren habitat along the Gulf and eastern coasts of the United States).