Here are some pictures of scorpions under UV light at the Haus des Meeres (Aqua Terra Zoo Vienna).
Scorpions under Ultraviolet (UV) 
Scorpions under Ultraviolet (UV) 
Scorpions under Ultraviolet (UV) 
Scorpions under Ultraviolet (UV) 
Scorpions under Ultraviolet (UV)
at the Aqua Terra Zoo Vienna