Windscorpions are not insects and are more closely related to spiders than insects. They are not scorpions, either, but have been stuck with that unpopular term as part of their common name. Their striking and dangerous-looking appearance gets the attention of those who encounter them and there have been several requests for identification this week.
Windscorpions do not have venom glands and are not venomous! However, they can bite and are actually rapidly moving predators of insects. They are so fast that some people have claimed they, "run like the wind". Considering that windscorpions eat insects and other arthropods for a living, it is a good idea to think of them as beneficial, except perhaps when they are in a home or building. In this case it would be a good idea to forego the can of insecticide and simply move them outside. Here is a link to more information at the Texas A&M Department of Entomology.