A large dung beetle, Dichotomius carolinus, that just hit my back window a few minutes ago. I've found them dead a few times, but this is my first live one. They are very impressive--said to be so strong it is difficult for a human to hold them in a closed fist. Length is about 28 mm--the largest dung beetle in North America, they tell me on BugGuide. (There are some larger North American beetles, just not any larger dung beetles.)
Glipa oculata, a large (8 mm) and distinctively-marked member of this family. Members of this family are usually seen on flowers, but this one was running about the the foliage of a dogwood (Cornus florida). I also recently found one at my lighted kitchen window. Taxonomic note: Expert discussion on Bugguide has suggested that this particular species needs to be moved out of the genus Glipa, perhaps to the genus Mordella or the (tongue-twisting) Hoshihananomia. However there appears to be no official publication on this, so in Glipa it stays for now.