Their behaviour varies, but typically involves climbing a plant until they reach a suitable flower, and then staying still until a prey insect comes within range.
Individuals construct a funnel-shaped structure of silk sheeting and lie in wait at the small end of the funnel for prey insects to blunder onto their webs.
Characteristically, the prey insect that blunders into the sticky lines is stunned by a quick bite, and then wrapped in silk.
As moments passed, and as the dragonfly spiraled down, the wave of prey insects grew denser and more chaotic.
A research study showed that the insect favoured the weed over the corn even though it housed no prey insects.
As nymphs, some species will cover and camouflage themselves with debris or the remains of dead prey insects, which forms a very effective camouflage.
Otherwise the prey insects fly off searching elsewhere for food.
However, a point that is rarely mentioned is that most prey insects do not attract Milichiidae particularly.
They are large-headed, hump-backed grubs that flip backwards to capture prey insects that wander over the ground.
Unable to eat solid food, adult ants feed on juices from the prey insects; the meat of the prey is fed to the colony's larvae.