"The sting of the Hawkwasp is likened to being electrocuted, or having your blood replaced by fire. One researcher said the pain is so excruciating, it removes your ability to do practically anything, except possibly scream." I would just die!
This is a tarantula hawk, a large wasp famous for hunting and killing huge tarantula spiders. For more about this species and a battle video, see: http://www.infobarrel.com/Epic_Battle_Tarantula_Spiders_vs_Tarantula_Hawk_Wasps