Are they beetles with hard wing covers or bugs with soft wing covers? Here is a site that shows beetles (hard wing covers):
Order Coleoptera - Beetles - BugGuide.Net
You will not believe what I found when I was looking for some id help for you! An entomology collectors site! Oh I am thrilled! I don't do mounted specimens any more but I still collect pictures of neat bugs. Easier to care for (mounted specimens require a lot of care and display space) and the bugs get to live and reproduce. Makes us both happy.
Dang, now I need more computer time.