The jackal fly is a tiny fly, who feeds on the haemolymph from other insects. The thing is, it's so tiny that it can't attack other insects itself, but instead turns up when something bigger and stronger has killed something, attracted by the smell of injured insect. The Ceropegia gerrardii plant (no known connection to any football player!) attracts the jackal fly by producing a liquid which emits the smell of an injured honeybee. The jackal flies flock to it, hoping to steal food and haemolymph from the 'injured insects' but instead feed on the plant liquid. At the same time, they pick up grains of pollen which they transfer to other plants.