they are generally smaller species (and inch or less)

I think this is a male Abedus based on the fact that in the ventral shot, the abdominal apex appears pretty rounded and the body outline is pretty convex in general. Belostoma appears more linear and elongate with the abdominal apex more acute, at least to me.

I know that in many belostomatid keys, size is the second factor after hemelytral membrane used to differentiate the two genera but at "about an inch" the 24-27 mm mark is pretty hard to differentiate. I know that two species of Belostoma reach 29 mm in length and Microabedus is one subgenus of Abedus, leading me to believe that some may get smaller than other congenerics. In other words, I don't think size is necessarily all that helpful in this situation. I also think this should stay under the family heading until some other people weigh in with their opinion.