Hyles lineata
Huge moth looking insect.
What an amazing experience! I believe this is Hyles lineata, though I cannot quite tell because the forewings are moving.
Check this link out:
http://www.butterfliesandmoths.org/speci...
Lat: 35.63, Long: -95.95
Spotted on Oct 1, 2011
Submitted on Jun 26, 2012