article_snippet.sent: the wood-boring beetles live for only a few weeks, but the larvae stage of the wood-boring beetles life cycle can last for up to 13 years.
article_snippet.sent: Deathwatch beetles like this one are living in the timber of the building .
article_snippet.sent: Deathwatch beetles get Deathwatch beetles name from tapping or ticking sound often heard in the rafters of old buildings.
article_snippet.sent: Deathwatch beetles make the noise to attract mates.
article_snippet.sent: Deathwatch beetles measure 7mm long, and the larvae 11mm.