The females stung the target about four times per second, compared to about three times per second for the males.
The males were the speedier sprinters, running about 30 percent faster than the females. The females seemed averse to sprinting, Carlson said.
"Females would sometimes just run a little ways and then give up," Carlson added.
So the females may simply be too heavy to scurry away quickly, and would rather wield their stingers to defend themselves, Carlson suspects.
As a follow-up, the team wants to figure out exactly why male scorpions have longer, skinnier tails than females.
The findings were detailed today (May 28) in the journal PLOS ONE.
More from LiveScience:
Creepy, Crawly & Incredible: Photos of Spiders See Video of Mouse Attacking a Bark Scorpion Gallery: The Amazing Scorpion-Resistant Mouse Copyright 2014 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Article originally appeared on LiveScience.