It’s a toe-biter. They have one of the most painful stings among insects.

IIRC, it’s not a venom sting per se. Rather, they inject a digestive enzyme that breaks down the tissues in your skin. So it feels like the sting site is on fire, as all the surrounding nerves slowly get digested.

It’s the same way they feed. They trap prey with those big pincers, then inject them with the digestive enzymes and wait for it to turn their prey into soup.