Moved from Spur-throated Grasshoppers.

It looks like there are a couple of others of the same on BugGuide. Here are links to them. I think keeping them connected in this way may aid in identifying them in the future:

They can survive. They won't grow a new leg to replace the old, but they can continue to grow and escape fairly well with only one booster. Now the name of the critter, that's goin' t' take a bit more doin'. I'll see if I can figure it out. It's a youngster, looks like in subfamily Melanoplinae. It's not that young nymphs are so difficult to identify; it's that there is very literature to help, and unless you already are familiar with the species, it's hard to know what it is till it grows up (or nearly so anyway). I'm not familiar with this one at this tender age.