The close proximity of the blacklight coupled with the lowered exposure really brings out her textured body. Alexial is a deathstalker scorpion, Leiurus quinquestriatus.
In normal light she looks like this:
You should NEVER leave a blacklight on a scorpion long-term. The intense UV rays will eventually kill the nocturnal animal. Some pet stores market scorpion habitats with blacklights because they look cool, but they don't tell you the facts.