A plant bug (Pameridea roridulae) sucks on a fruit fly, which is stuck to the extremely sticky leaf surface of the South African plant Roridula gorgonias. The insert images show schematic views of the assumed interactions between the sticky plant secretion (orange) and the chitinous surface of the insect (purple) with the anti-stick layer (yellow). Sticking to the plant’s sticky layer is inhibited in the case of the plant bug (lower insert image). Credit: Dagmar Voigt and Stanislav Gorb/ MPI for Metals Research