Hi, You've got a female Two-stripe Grasshopper here. This one and a few others on BugGuide are unusual in that the hind femur has dark color extending well below the mid-line. Usually the top half is dark, the bottom half light. Here is a thought (by no means necessarily true). I've long thought that M. differentialis and this species occasionally hybridize. This could possibly account for this pattern abnormality, as well as a few of the other really odd individuals that turn up now and then where the two are found together.