Veteran Foldit players might enjoy this article about Snow Fleas:
http://cen.acs.org/articles/93/i21/Snow-Fleas-Pack-Chemical-Weapon.html

It cites another article called
"Sigillin A, a unique polychlorinated arthropod deterrent
from the snow flea Ceratophysella sigillata" at:
http://dx.doi.org/10.1002/anie.201501719