Paropsis atomaria larva

The Eucalyptus leaf beetle larvae live their lives exposed to predators and exhibit some novel ways do defend themselves. They metabolize a toxin known as hydrogen cyanide and produce a droplet when they feel treatened by a predatory bird, wasp or even a camera lens, as in this case.

comments (3)

Martin Lagerwey

Lion

The Eucalyptus leaf beetle larvae live their lives exposed to predators and exhibit some novel ways do defend themselves. They metabolize a toxin known as hydrogen cyanide and produce a droplet when they feel treatened by a predatory bird, wasp or even a camera lens, as in this case. Posted 9 years ago, modified 9 years ago

Jivko Nakev

Lion

Wow, hydrogene cyanide is extremely poisonous! If in air 300mg/m3 would kill a human in about an hour! Posted 9 years ago

Martin Lagerwey

Lion

That is impressive. Eucalyptus produces toxins (oils) to discourage getting eaten, of course, and some herbivores retain those toxins for self defence. This chemical however does not occur in the foodplant at all and is a metabolite of the beetle larva. I imagine this is for protection against larger predators such as possums, antechinus, bandicoots and birds. Posted 9 years ago