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SB Project: Sketches 31 and 32

December 18, 2010

Two more pages from the Sketchbook Project!

Emerald Jewel Wasps exclusively use cockroaches to reproduce. Upon locating a cockroach, the female wasp stings it with a mild paralytic. Once the roach has been immobilized, the wasp makes a very precise injection of a different venom into a specific area of the cockroach’s brain. Studies indicate that the venom blocks dopamine and/or octopamine receptors, and from then on the cockroach will not attempt to flee, even after the paralysis wears off. At this point the wasp usually bites off parts of the cockroach’s antennae and leads it into a burrow. After laying a single egg on the roach’s stomach, the wasp barricades it and the egg inside the burrow and leaves. Soon the egg hatches and the larva burrows inside of the roach, consuming its tissue for nourishment. The cockroach is alive this whole time, but because of the second sting it got from the female wasp, it still will not attempt to flee. Eventually the wasp larva creates a cocoon inside the roach and develops into an adult wasp. After it hatches, it emerges from the now dead cockroach and leaves the burrow.



This has nothing to do with the “adhere to me” theme, but baby koalas have to eat their mom’s poo in order to acquire the proper enzymes to digest eucalyptus leaves. Yum.


3 Comments leave one →
  1. Donna permalink
    December 19, 2010 23:07

    The wasp/roach thing is sooo nasty!! I now feel empathy for roaches!! The Koala sketch is so good! The poo part…not so good!!

  2. December 19, 2010 23:56

    I know, I feel bad for the cockroaches too. :<

  3. December 23, 2010 02:11

    These are gorgeous, Chels. I have nothing else I could say about these ones. I don’t think there’s any critiques to be had!

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