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.
Dejan ahí sus huevos pensando que es un bonito cadáver, sin darse cuenta de que ahí no hay alimento para los huevos; se les mueren. Pero entre tanto, la planta se beneficia porque las cerdas las dejan ir, las moscas desaparecen y se van a polinizar