I have put the focus on the white stripe which looks, according to BOA, not as sharpedly marked in Catillus than in Albofasciatus.
http://butterfliesofamerica.com/t/Chioi ... llus_a.htmBut looking at other pictures on the web there are actually some which are looking like yours that are IDed as Catillus. I do not know how accurate the geographical ranges are that are written in funet or BOA. On the NABA page there is also a Catillus like yours. So my thinking might be completely wrong, in this case, sorry. But at least you have a hint for the genus...
Maybe Ricardo has the ultimate clue!