Do mosquitoes sleep? It's a fair question. You swat them away all evening, then wonder where they go when you finally head inside. The short answer is yes, mosquitoes do sleep, though not in the way we do.
Do mosquitoes actually sleep?
Mosquitoes don't sleep the way humans or other mammals do. They don't have eyelids, and there's no "lights out" moment. But mosquitoes do enter distinct sleep-like states, characterized by reduced movement, lowered body posture, and a decreased response to stimuli.
In these resting states, a mosquito's hind legs droop and its abdomen sits closer to the surface it's resting on. It becomes less responsive to things around it, including the carbon dioxide and body heat that normally draw it toward a host.