Photuris

Photuris is a genus of fireflies (beetles of the family Lampyridae). The adult females of this genus are notable for preying on other fireflies. They engage in aggressive mimicry, imitating the light signals that other firefly species' females use to attract mates – but Photuris use it to attract, kill and eat the unsuspecting males of those other species. Their flashing bioluminescent signals seem to have evolved independently and eventually adapted to those of their prey, mainly unrelated Lampyrinae, such as Photinus (rover fireflies) or Pyractomena.