A male firefly, Photinus pyralis, signals to females with an illuminated upward swoop.
Urbana, Illinois, USA
A humpbacked dung beetle in lab culture at Indiana University.
A female Rhipiphorus sp. wedge-shaped beetle lays an egg in an aster. These odd insects are parasites of bee larvae. On hatching, the young beetle grub will attempt to hitch a ride back to a bee's nest where it will attack the bee's own offspring.
Shawnee National Forest, Illinois, USA