Acmaeodera pulchella
I went out to photograph flowers this evening but came across this metallic wood boring beetle (family Buprestidae) on a black-eyed Susan. There are twelve dozen species of Acmaeodera in our area and one of the experts at BugGuide.net identified it as Acmaeodera pulchella, sometimes known as the flat-headed bald cypress borer. We’re not really in bald cypress country but they feed on a pretty wide variety of trees, so that’s not really an issue.