Do wasps sleep?

Yes, wasps do sleep, though their sleep is different from human sleep, as insects have periods of inactivity and reduced responsiveness that are considered sleep-like states. Wasps are generally diurnal, active during day searching for food, building nests, and defending colony, and they become inactive at night, returning to nest and entering sleep-like state with reduced movement and responsiveness. Research on insects shows they have circadian rhythms and need rest to maintain brain function, and wasps have been observed sleeping in nests, clinging to nest or vegetation with legs tucked, and showing reduced response to stimuli. Queen wasps in winter hibernate in sheltered places, which is extended sleep state. Wasp sleep is not same as mammalian sleep with REM, but it is period of rest. Factors like temperature affect wasp activity, cooler nights cause more inactivity. So wasps do sleep at night, becoming less active and staying in or near nest, which is why nest removal is recommended at night when wasps are less active and less likely to sting, as they are in sleep-like state. However, wasps can still be disturbed and sting if nest is disturbed at night, so caution is needed. Overall, wasps have daily rhythm of activity and rest, with sleep occurring mainly at night, and hibernation in winter for queens ensures survival.