Photo by Jerry Schudda
Arizona Bark Scorpion with Scorplings – Centuroides sculpturatus
These small bodied scorpions are most typically identified by their light brown – tan coloration, skinny metasoma (commonly called its tail) and small pedipalps (commonly called pincers). Unlike their spider cousins, they give live birth most commonly in batches of 20-30 scorplings. Although small in stature, these are the only scorpions considered to be dangerous to humans and can slide through cracks as small as 1/16 inch.
The venom from the sting of a bark scorpion is most dangerous for children under 5 years old with the neurotoxin in their venom triggering nerves to fire without brain signaling. Clinical trials organized by the VIPER Institute showed the antivenom Anascorp to be an effective neutralizer of bark scorpion venom. (Read more at https://www.nejm.org/doi/full/10.1056/NEJMra1401108)