An ant-mugging fly (Milichia patrizii) chases down Crematogaster ants on a South African tree branch. If the fly can catch an ant, she will force the ant to feed her. St. Lucia, KZN, South Africa

Assassin bugs are sit-and-wait predators. This Zelus tetracanthus arrived at a blacklight insect trap and intercepted incoming prey, in this case a male trap-jaw ant. Tucson, Arizona, USA