Hawthorn Fly

Fascinating facts about the Hawthorn Fly

• The hawthorn fly is called that because its adults normally appear just before the calendar turns to 25 April, the feast of St Mark. This timing is consistent across its European range, so each year the species is linked to that specific spring date. The emergence is a seasonal cue that signals the start of the adult stage, when they begin to feed on flower nectar and pollinate plants.
• When hawthorn flies are in flight they often hover with their long legs dangling beneath their bodies, a posture that makes them easy to recognise. Observers note that the insects can be seen hovering with their prominent legs dangling below. This distinctive stance is typical of the species and helps differentiate it from other flies that keep their legs tucked while airborne. The dangling legs are a hallmark of their hovering behaviour.
• Adult hawthorn flies feed on flower nectar, obtaining energy for flight and reproduction. While doing so they transfer pollen between blossoms, earning them a reputation as valuable pollinators in the habitats they occupy. Their role in pollination links them directly to the reproductive success of many flowering plants they visit.
• The larvae of the hawthorn fly damage the roots of several cultivated plants, including celery, asparagus, roses, saxifrages, lawn grass, lettuce and Polyanthus. Like most bibionid larvae, they are herbivores and scavengers that feed on dead vegetation as well as living plant roots, which is why they become pests in gardens. Adult females usually lay their eggs in soil or decomposing vegetation, providing the next generation of root-feeding larvae.
• Male hawthorn flies display pronounced sexual dimorphism, with eyes that are much larger than those of females. The dimorphism is a consistent feature of the species.

Sources

Every fact above was checked against these pages, and kept only where one of them states it.

• Wikipedia

At a glance

About the Hawthorn Fly

In the warm, golden light of spring, the Hawthorn Fly dances through the air, its delicate, dark form weaving an intricate pattern amidst the blossoming hawthorn trees. With a mesmerizing flutter of its wings, it sips nectar from the fragrant flowers, its long, slender proboscis uncoiling like a thread to reach the sweet, hidden treasures within. As it moves, the fly's iridescent sheen catches the sun, casting a tiny, shimmering glow across the surrounding petals, a fleeting, ephemeral moment of beauty in the bustling, vibrant world of insects.

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