Blister Beetle

Yes, my search led me to a page in bugguide.net that suggested that some of these species physically resemble each other so much that microscopic examination is the only way to ID to species. The Northwoods series of books are great. I think I've got all of them sitting right here on my desk and I reach for them often, but they are necessarily limited in scope, but I find they get me in the right area to conduct more comprehensive searches elsewhere. I probably started on this spotting with Insects of the Northwoods, went to bugguide and other sources and finally gave up and simply went with Nemognathinae as being broad enough that I wasn't mis-identifying the beetle. My spotting may very well be Nemognatha lutea lutea or possibly some other look-alike species. Just not sure. Interesting insects....