Original caption: "Effect of simulated rain on ants foraging on the underside of the pitcher lid of <i>N. gracilis</i>."
Bauer <i>et al.</i>
CC BY 2.5
Bauer, U., B. Di Giusto, J. Skepper, T.U. Grafe &amp; W. Federle 2012. With a flick of the lid: a novel trapping mechanism in <i>Nepenthes gracilis</i> pitcher plants. <i>PLoS ONE</i> <b>7</b>(6): e38951. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1371%2Fjournal.pone.0038951">10.1371/journal.pone.0038951</a>