Yes, in Cuba, there is a plant that has a hemispheric hollow leaf placed above its blooms.  That shape of leaf serve to reflect bat signals from bats back to the ears of the bats, attracting the bats.  The bats can get to the plant in the dark, and pollinate the blooms of the plant while at the plant.  I'm not sure what the bats eat, but I think it could be nectar of the blooms.