I don't look for them really, but I encounter them almost everywhere in Arizona in August especially, and get many different species at my lights. Last year I got:
S. lucens S. jaguarina S. arcigera S. gaurae S. mortua S. errans S. mexicana S. luxa S. nundina S. ciliata S. oleagina S. hulstia
Schinia mexicana is considered to be one of the best Schinias. Until about 5 years ago it was unknown in the U.S., and then it started being found in some of the classic collecting spots. Now it's pretty routine in places like Harshaw and Copper Canyon, and can be common. It's one of several Mexican species that appears to be moving north in recent years.
It's an interesting group of Noctuids though, like Catocalas but even more diverse, with new species being described every year.