Eurasian Hummingbird Hawkmoth

Fascinating facts about the Eurasian Hummingbird Hawkmoth

• Hovering like a hummingbird, this moth keeps a steady position while sipping nectar. Its 25-28 mm proboscis slides into tube-shaped flowers, letting it drink deep nectar that other insects can't reach. This precise hovering costs a lot of energy, but it lets the moth avoid competition and pollinate plants that rely on long-tongued visitors, linking its survival to the health of garden blossoms.
• A single female can lay up to 200 glossy green eggs, each about 1 mm across, on separate host plants that look like tiny flower buds. The eggs hatch in just 6-8 days, and the newborn larvae are bright yellow before turning green with distinctive grey-cream stripes.
• In the hottest parts of its range, the hummingbird hawk-moth's thorax can reach temperatures above 45 °C (113 °F), one of the highest recorded for hawk-moths and near the limit for insect muscle activity. This heat tolerance lets it stay active during scorching summer days when many insects hide, allowing it to feed continuously and maintain multiple generations, especially in southern Europe where three to four broods may appear each year.
• Adults possess a trichromatic eye system most sensitive to light between 349 and 521 nm and can tell colors apart by as little as 1-2 nm, finer than the vision of honeybees. This sharp color discrimination guides them to the most rewarding flowers, where longer tubes usually hide richer nectar. Their visual acuity therefore drives pollination patterns, shaping which plants thrive in gardens and wild meadows.
• Unlike most moths, this species overwinters as a fully formed adult tucked into rock crevices, tree bark, or building cracks, and can even emerge on warm winter days to feed.

Sources

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

• Wikipedia

At a glance

About the Eurasian Hummingbird Hawkmoth

The Eurasian Hummingbird Hawkmoth (Macroglossum stellatarum) is a remarkable lepidopteran that captivates observers with its striking resemblance to a hummingbird. Sporting a stout, elongated body adorned with a vibrant pattern of brown, orange, and yellow, this moth boasts a wingspan of approximately 5 to 6 centimeters. Its most distinctive feature is its rapid wingbeat, which can reach up to 80 beats per second, allowing it to hover effortlessly in front of flowers while it feeds. This moth is predominantly found in gardens, meadows, and woodland clearings across Europe, often venturing into areas where its preferred nectar-rich plants thrive. Its ability to adapt to urban environments has made it a common sight during warm summer evenings, as it flits between blossoms, seeking sustenance with its long proboscis. Interestingly, its flight pattern is not unlike that of a bumblebee, creating a delightful spectacle for nature enthusiasts and casual observers alike. As dusk falls, the Eurasian Hummingbird Hawkmoth becomes increasingly active, showcasing its remarkable feeding behavior. It is particularly fond of tubular flowers, where it deftly extracts nectar while simultaneously aiding in pollination. This moth’s diet primarily consists of nectar from plants like honeysuckle and evening primrose, but it is also known to consume the sugary secretions of aphids. One surprising trait of the Macroglossum stellatarum is its ability to thermoregulate; it can raise its body temperature by contracting its flight muscles, enabling it to remain active in cooler conditions. This extraordinary adaptation allows it to extend its feeding hours into the twilight, ensuring that it capitalizes on the abundance of floral resources available during the warmer months.

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