I'd say a better body match would be a coatimundi, a "slinkier" form of coon; coons have a more 'bearlike' body. Still a horrid case of mange, no matter what it is. DNA should not a problem here, and would be definitive.
Where this was trapped is on the extreme fringe of its range, so wouldn't expect locals to be familiar with them.
Coatimundi have short, stubby ears.. this guy has fox ears.
That was my first guess but the ears are the deal breaker.
YEP that looks like him or her which ever the case may be! This one however is in much better condition!
what about the ears?