Yanmamon, the jumbo dragonfly Digimon. Appearing almost mindless outside of their ever unsatisfied hunger, these insectoids travel in small swarms, ganging up on Digimon that would otherwise be a suicide charge attacking alone. As a result, they eat the body of the dead Digimon before moving out to find the next victim.
Their hunting method starts out with a coordinated strafing movement, their mandibles linking up with their front claws to generate an electric current, firing them at their enemy's weak points (Thunder Ray).
Next, a flurry of spores can be released from it's wings, becoming hand sized wasps within seconds upon release. These wasps ruthlessly attack all living creatures around them and infest any open pores until they eventually die. (Insect Swarm)