I'm sure there's someone on here who can probably glance at it and tell you but I would say
A. microscaphus because of the characters I can see in the picture:
- no (or very indistinct) cranial crests
- relatively smooth skin without dark spots
- indistinct stripe down the back
But I'm an east coaster so I'm just reading this stuff out of a book and am no expert on western toads!
