This one belongs to the genus Serradigitus (Vaejovidae) but nearly impossible to tell without the scorpion in hand (or under a microscope!).
Great photo!

I'm wondering if the picture and information in my National Audubon Society Field Guide To Insects & Spiders might apply to your scorpion. 635 Centruroides Scorpions(Centruroides spp.) Description: 2-2&3/4 in.(50-70 mm.) Dark brown to tan, often striped with greenish yellow along midline above. Some species have greenish-yellow parallel stripe on each side of cephalothorax. Abdomen slender,constricted at each segment, pale or dark according to species. Tooth beneath venom bulb. Habitat: Dark crevices under bark, stones, and litter on the ground. Range: Florida and Gulf states, west to Arizona and Mexico. Food: Small insects. Life cycle: Female keeps eggs in sac, then carries hatchlings on back until they can fend for themselves. Male uses pincers to pull female on top of him.

I'm wondering if the picture and information in my National Audubon Society Field Guide To Insects & Spiders might apply to your scorpion. 635 Centruroides Scorpions(Centruroides spp.) Description: 2-2&3/4 in.(50-70 mm.) Dark brown to tan, often striped with greenish yellow along midline above. Some species have greenish-yellow parallel stripe on each side of cephalothorax. Abdomen slender,constricted at each segment, pale or dark according to species. Tooth beneath venom bulb. Habitat: Dark crevices under bark, stones, and litter on the ground. Range: Florida and Gulf states, west to Arizonza and Mexico. Food: Small insects. Life cycle: Female keeps eggs in sac, then carries hatchlings on back until they can fend for themselves. Male uses pincers to pull female on top of him.