Subject: What kind of beetle is this
August 5, 2014 9:52 am
I live in Mississippi and found this in my office.
This beautiful beetle is a beneficial Black Caterpillar Hunter, Calosoma sayi. You can compare your image to images posted to BugGuide. According to BugGuide, it can be recognized by being: “Large, black, with prominent gold or red punctures and blue or green margins of elytra. (These are not prominent on cursory inspection–the beetle appears all black.) Resembles C. calidum but larger (25-28 mm vs. 16-27 mm) and more southern in distribution. Quoting from Ciegler (2000).” The red punctures are visible in your image despite the lack of critical focus and clarity.