From the steaming jungles of north Queensland, a beetle looking as if cast from plastic:
This odd creature, a wrinkled bark beetle, is a specialized predator of slime moulds. Although at first glance they don’t appear related, wrinkled bark beetles are actually highly modified ground beetles.
***update: Since a number of you have asked, here is one reason why I consider wrinkled bark beetles to be modified carabids:
Canon MP-E 65mm 1-5x macro lens on a Canon EOS 7D
ISO 200 f/13, 1/200 sec
diffuse twin flash
literature: Maddison D.R., Moore W., Baker M.D., Ellis T.M., Ober K.A., Cannone J.J., and Gutell R.R. (2009). Monophyly of terrestrial adephagan beetles as indicated by three nuclear genes (Coleoptera: Carabidae and Trachypachidae). Zoologica Scripta, 38(1):43-62.