Hoverfly

Hoverflies, family Syrphidae, are a large and diverse group of true flies found throughout the world, with thousands of described species. Many hoverflies have evolved yellow-and-black or orange-and-black banding that closely mimics bees and wasps, a defensive strategy called Batesian mimicry that deters predators despite the flies having no ability to sting.

Hoverflies are among the most beneficial garden insects: adults are important pollinators, visiting a wide range of flowers for nectar and pollen, while the larvae of many species are voracious predators of aphids and other soft-bodied plant pests, making them valuable allies in natural pest regulation.

• Slender, often narrow-waisted body, 6–15 mm long, patterned in yellow, orange, or white bands on black.
• Large eyes that often meet at the top of the head in males.
• Single pair of clear wings, unlike bees and wasps which have two pairs.
• Signature hovering flight: capable of remaining nearly motionless in the air before darting quickly sideways.
• Lookalike: often mistaken for bees or wasps, but hoverflies have only one pair of wings, short stubby antennae, and no stinger.

Found worldwide, especially in temperate gardens, meadows, farmland, and woodland edges with abundant flowers. Adults are most active on warm, sunny days from spring through fall, frequently seen hovering near flower clusters or basking on foliage.

Adult hoverflies feed on nectar and pollen, making them significant pollinators for many wildflowers and crops. Many species lay eggs near aphid colonies, and the resulting larvae are active predators that consume large numbers of aphids and other small, soft-bodied insects. Adults are agile fliers, capable of precise hovering, rapid forward bursts, and even backward flight.

Hoverflies undergo complete metamorphosis. Eggs are laid singly or in small groups near prey colonies such as aphids; the resulting legless larvae feed voraciously for one to two weeks before pupating in a hardened case attached to a leaf or in soil. Multiple generations occur per year in warm climates, with some species overwintering as larvae or pupae.