No other species within this one's distribution is likely to be confused with
Romalea microptera. So far
Romalea microptera and the closely related and similar Horse Lubber -
Taeniopoda eques have not been found in the same region, but they could meet in southern Texas, where the two could be confused.
Taeniopoda has a higher, more pronounced median ridge on the pronotum, and in the U.S. rarely occurs in any color other than black. See species account for
Taeniopoda eques.