They lay their eggs in it, thinking it's a nice bit of carrion, and not realizing that there's no food for the eggs, that the eggs are going to die, but the plant, meanwhile, has benefited, because the bristles release and the flies disappear to pollinate the next flower -- fantastic.
de lægger deres æg i den i den tro det er et lækkert ådsel, uden at indse at der ikke er noget mad til æggene og at æggene vil dø. Planten har i mellemtiden draget nytte af det, for børsterne løsner sig og fluerne forsvinder for at bestøve den næste blomst -- fantastisk.