Here's a site with a map showing the range of these critters.
http://mothphotographersgroup....
Looks like you do have them in Mississippi, Ken. Texas also, and up the East Coast as far as the Chesapeake at least! Ick! As if we needed another stinging insect around here! I'm getting out my Bt sprayer right away!
Oh, and here's a good site for first aid treatment if you do get stung.
http://www.wikihow.com/Treat-a...