How do robber flies catch and feed on other insects?

Robber flies (family Asilidae) are predatory insects that capture other flying insects while in flight. Their long legs are specifically adapted to seize prey during mid-air strikes and to hold the victim securely while they feed.12

Once the prey is captured, the robber fly uses its mouthparts to inject a fluid into the victim. This fluid contains substances that break down the insect's internal muscle tissue, allowing the fly to consume the liquefied contents. These flies also possess a characteristic "moustache" of bristles between their large-faceted eyes, which is believed to protect their eyes from potential damage caused by the struggling prey.12