Caterpillars Don’t Have Lungs, But Somehow This One Can Scream to Keep Predators Away
Original article on OddityCentral.com – a blog on oddities and wacky news http://www.odditycentral.com/
Apart from the sound they make while chewing on leaves, the vast majority of caterpillars are silent creatures. However, the Nessus sphinx hawkmoth caterpillar is able to produce clicking noises that sounds a lot like static, as a self-defense mechanism, and scientists believe they discovered how.
Insects have no lungs, but some of them can be really noisy. While humans and most other vertebrates make noise by forcing air out of their bodies, insects and larvae don’t have that luxury. Some of them have adapted, rubbing, knocking or vibrating parts of their bodies to produce distinctive sounds, the kind you hear when you open a window on a quiet summer night, but the Nessus sphinx hawkmoth caterpillar doesn’t fall into that category. When threatened, it produces a strange sound that resembles a combination of cracking and spitting, by pushing air through a constriction between its two foregut chambers, even though it has no lungs.
Source: http://www.odditycentral.com/animals/caterpillars-dont-have-lungs-but-somehow-this-one-can-scream-to-keep-predators-away.html
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