Tarantula Hawk

Pepsis grossa is one of the largest spider wasps on Earth, with iridescent blue-black bodies and rust-orange wings — visual drama that broadcasts unpalatability across an entire desert. Female tarantula hawks specialize as predators of tarantulas: she finds a tarantula at its burrow, pulls it out, paralyzes it with a single carefully-placed sting to a nerve cluster, drags the still-living spider back to a prepared underground chamber, lays a single egg on the spider's abdomen, and seals the chamber. The egg hatches; the larva consumes the immobilized spider over several weeks, carefully avoiding vital organs to keep it alive as long as possible. Tarantula hawk venom evolved for paralysis, not pain — but the human reaction is famous. Justin Schmidt rated the sting 4.0 on his pain index, alongside only the bullet ant, with the recommended response: "Lie down. Don't fight it." Pain lasts about three minutes but is so intense that recipients are often unable to walk during the episode. Tarantula hawks are docile when not provoked and rarely sting humans.