PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY
Chiastocheta fly pollinating globeflower. Chiastocheta fly, covered with pollen, inside the flower of a globeflower (Trollius europaeus). This fly plays a vital role in the life cycle of this plant, helping to pollinate the plant as well as laying eggs from which its larvae hatch and feed on the plant's seeds. This is an example of obligate mutualism. This plant is found in Europe and Western Asia. Photographed in Europe.
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