Yucca Giant-Skipper (Megathymus yuccae)
I have not seen this species in Louisiana.  I have looked for it in places where it has been seen before, but cannot find it, thus these photos are from Texas.
Yucca Giant-Skipper
TX County Road 3913, Athens, Henderson County, TX
Yucca Giant-Skipper
TX County Road 3913, Athens, Henderson County, TX