False bombardier beetles
Jeff Hahn, Department of Entomology, University of Minnesota
Size: 3/4 - 1 inch long
Description: Slender with a dark head and wing covers and an orangish section behind the head (prothorax).
Where/When: Generally found on the ground under leaves and other cover in a variety of environments during spring and summer.
Significance: They are important predators of insects, especially caterpillars.