I have looked all around the south and the closest I have found is in GA. I'm hoping to find one in TX, too - I'm trying to convince the SO to move me back there...
Let us know if you find anything!
You may want to PM irwin'smom...she is in San Antonio and I think she has feeders available to order. Here is a link to the feeder site: http://hungryherps.weebly.com/
It's not always possible to find insect breeders in your area. I reccommend buying online; its cheaper.
I recently made some comparisons to some online feeder insect websites; of course, its shipping that kills everybody, but you can try out a few of these sites: viewtopic.php?f=76&t=97119
There is another discussion forum where someone might be able to help you. It is a general reptile discussion forum though. http://www.southtexasreptiles.com
I haven't been able to find anyone in the Austin area that has anything besides crickets, superworms, and roaches. I've order silkworms, hornworms, and butterworms online. I had NO IDEA that Irwin'smom had this AND I didn't realize she was right down the street (compared to California or Australia). I ordered roaches online from TheRoachGuy and have a colony now.
There's a guy at http://www.Cowtownreptiles.com who has feeders in Texas. I have never dealt with him but a couple of customers of mine have been pleased with is service.