Cockroaches, often referred to colloquially as "jay bugs," can live for several weeks without their head. This is because their nervous system is decentralized, allowing them to function without a brain. They rely on a series of ganglia (nerve cell clusters) distributed throughout their body to control basic functions. However, they will eventually die due to dehydration and inability to eat.
jh
A mantis can live 1 day and a half without his head.
Adult bed bugs can live for as long as a year without feeding,[18] under typically warm conditions
5 years
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im not not shure if you mean how long do cockroaches live without a head, but if so i read they can last about week.
3 months
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Less than a minute if u jab it with a golf tee
2-3 years
There are no known bugs that live in lungs. It is possible for a short period of time one could survive in a lung though not for long.
2 days