I should have specified that we found it in desert shrub: creosote, acacia, agaves, mammilaria cacti. Not much grass at all. So the plains lubber may not be present. One lubber of the aeria is definitely the horse lubber - see the other nymph.

I believe that Brachystola magna actually prefers scrub to grasslands - I know that it prefers broadleaf weeds to grasses as far as for feeding. Plains Lubbers occur throughout the sate of Arizona and on South into Mexico. I may be wrong about this being a plains lubber nymph, though. Your horse lubber nymph is a very handsome fellow, though. Nice pictures all the way around.

Thanks, I am planning another trip to the area to photograph adult horse lubbers. Maybe I'll find the imago of this one, too, but they were by far not as common.

In an area not to far from the location of this one, we now found older ones that really look like Plains lubbers. So I felt confident to move the little guy, too