Robberfly

Description:

Robberfly belongs to a family of medium to large predatory flies known for their fast flight, excellent vision, and their habit of catching large prey while in flight. Also called assassin flies. Robber flies are impressive predators that typically specialize in flying insects, including wasps, bees, and dragonflies; the prey may be larger than the robber fly itself.It uses its bristly legs to intercept the prey by grasping it around the head or back. Then, employing its needlelike mouthparts, the robber fly stabs the prey and injects a saliva that contains nerve toxins and digestive enzymes. This quickly paralyzes the prey and liquefies its tissues; the robber fly then sucks out the prey's insides, much as spiders do.

Habitat:

Most robber flies frequent sunny, open areas and are active during the warmest parts of the day and year. They perch on branches, logs, stones, or the ground, and rush out to attack when suitable prey flies by.