Double Pump

Robber Fly

In insects that feed on fluids, the first section of the alimentary canal is often adapted to pump fluids out of the food and into the insect. The robber flies, (Asilidae) feed on other insects by piercing them with sharp mouthparts, injecting digestive fluid and sucking in the digested and liquified body tissues. The robber flies have a dual pump mechanism. The pre-oral cavity (cibarium) is musculated and adapted for the initial pumping. (Mosquitoes also use their cibarium to…

Source: Living With Insects Blog

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