The metamorphosis is complete, or has 4 phases: egg - larva - pupa - adult. Predate young larvae of pests that attack various cultures. This does not have the remains of the victims on the body (no garbage)

With the mandibles drill the body of the prey and suck their content as a vampire, leaving two holes. This preserves the remains of the victims and with them zaprto v your body is protecting (with garbage)

By pupation without the garbage look like a ball ant with the garbage it remains on the ball. Both to become adult, cut a window perfectly round and come out flying

The adults of both species do not prey, only feed on nectar. They live a few days. Place eggs on a wire connected to the surface of the leaves, fruit and branches. That is to protect itself, because it preys his own brothers and cousins