Animal field guide
Greater Bee Fly
Bombylius major
The Greater Bee Fly feeds in the open by pretending to be something that stings. The long straight proboscis, the hovering, and the bee-like fur are all for the same job: take nectar in daylight without being worth attacking.
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Get AnimalDexGreater Bee Fly at a glance
Invertebrate · Native range keys: europe · Relatively common
Known for: Furred brown body, Long rigid proboscis held straight forward, Dark leading-edge band on the wing, Long dangling legs while hovering at a flower
Understand the animal
Understand the Greater Bee Fly
Factual biology first: what this animal is like, where it lives, how it survives, and why those traits exist.
01
Introduction to Greater Bee Fly
The Greater Bee Fly feeds in the open by pretending to be something that stings. The long straight proboscis, the hovering, and the bee-like fur are all for the same job: take nectar in daylight without being worth attacking.
How to identify a Greater Bee Fly
- Furred brown body, 10-15 mm, hovering like a small bumblebee
- Long rigid proboscis held straight forward, never folded
- Dark leading-edge band on the wing
- Long dangling legs while hovering at a flower
Why Greater Bee Fly are interesting
- It is a fly, not a bee. The resemblance is Batesian mimicry: it has no sting, and predators that have met a bee leave it alone.
- Larvae are parasitoids of solitary mining bees. The female flicks eggs toward a nest burrow while hovering, and the larva finds the host cell on its own.
- The rigid proboscis is used like a straw. The fly never lands to feed if it can help it, which is why the hover is so steady.
- It is one of the first large hoverers of European and North American spring, often out before most bees.
- Males hold small territories in sunlit clearings and chase anything of similar size that crosses them.
02
Adaptations and biological abilities
03
Why does Greater Bee Fly behave this way?
- Furred brown body, 10-15 mm, hovering like a small bumblebee
- Long rigid proboscis held straight forward, never folded
- Dark leading-edge band on the wing
- Long dangling legs while hovering at a flower
Active in warm sun, hovering in the open through the middle of the day, and still on vegetation in cool or wet weather.
04
Why Native range keys: europe?
Habitat: Native range keys: europe, north_america, north_africa_middle_east, central_asia. Sunny banks, woodland edge, gardens and dry grassland with early flowers and nearby mining-bee burrows. The adult needs nectar in the open; the larva needs a solitary bee nest in bare soil.
Native range: Native range keys: europe, north_america, north_africa_middle_east, central_asia. Sunny banks, woodland edge, gardens and dry grassland with early flowers and nearby mining-bee burrows. The adult needs nectar in the open; the larva needs a solitary bee nest in bare soil.
Native range
Natural range, not this specific capture location.
Native range keys: europe, north_america, north_africa_middle_east, central_asia. Sunny banks, woodland edge, gardens and dry grassland with early flowers and nearby mining-bee burrows. The adult needs nectar in the open; the larva needs a solitary bee nest in bare soil.
05
Why this diet?
Adults take nectar from primrose, bugle, lungwort, grape hyacinth and other early tubular flowers, hovering rather than landing. Larvae eat the pollen store and then the larva of a mining bee.
06
Activity, rest, and lifespan
Active in warm sun, hovering in the open through the middle of the day, and still on vegetation in cool or wet weather.
Adults live a few weeks in spring. The rest of the year is spent as a larva or pupa inside a bee nest.
07
Greater Bee Fly reproduction
The female does not enter the host nest. She flicks eggs toward the burrow while hovering, and each larva must find a cell. Many eggs never reach one.
Males and females look alike. Males are the ones holding sunlit airspace and chasing other flies; females are the ones hovering over bare soil as well as flowers.
08
Predators, threats, and defense
Birds and robber flies take adults that linger; the bee disguise is the main defence. Eggs and young larvae are lost to soil predators before they reach a host cell.
09
Conservation and rarity
Rarity: Relatively common · 12/100. AnimalDex canonical rarity score: 12/100, maintained by the live indexed species profile.
- Observe from a respectful distance and avoid changing the animal's behavior.
- Do not block feeding, shelter, nesting, or travel routes.
- Use a live camera capture without handling or staging wildlife.
Ask AnimalDex
Ask AnimalDex about the Greater Bee Fly
Ask about its biology, behavior, abilities, survival strategy, symbolism, or what its strategy can teach you. Answers stay grounded in this species page.
Anonymous: 3/day. Signed-in: 10/day. Pro: 30/day fair use.
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Compare the Greater Bee Fly
Where to find them
Where to find Greater Bee Fly
To find Greater Bee Fly in the wild, focus on the exact habitat patches that match its body design and daily behavior, not just the broad country where it exists. You usually do better by working one good piece of habitat inside native range keys: europe, north_america, north_africa_middle_east, central_asia. Sunny banks, woodland edge, gardens and dry grassland with early flowers and nearby mining-bee burrows. The adult needs nectar in the open; the larva needs a solitary bee nest in bare soil. than by covering too much ground.
- Forest edge, canopy gaps, fruiting trees, or shaded trails where cover and food meet
- Open grassland edges, lightly wooded plains, or raised ground where you can scan long distances
- Protected habitat blocks within native range keys: europe, north_america, north_africa_middle_east, central_asia. Sunny banks, woodland edge, gardens and dry grassland with early flowers and nearby mining-bee burrows. The adult needs nectar in the open; the larva needs a solitary bee nest in bare soil.
Animal field guide
Greater Bee Fly
The Greater Bee Fly feeds in the open by pretending to be something that stings. The long straight proboscis, the hovering, and the bee-like fur are all for the same job: take nectar in daylight without being worth attacking.
Native range
Natural range, not this capture location
Native range keys: europe, north_america, north_africa_middle_east, central_asia. Sunny banks, woodland edge, gardens and dry grassland with early flowers and nearby mining-bee burrows. The adult needs nectar in the open; the larva needs a solitary bee nest in bare soil.
Search near meAnimalDex stats
Dominance
10
Speed
22
Size
5
Intelligence
15
Rarity
12%
Total
64
Size scale
Scientific name
Bombylius major
Category
Invertebrate
Habitat
Native range keys: europe, north_america, north_africa_middle_east, central_asia. Sunny banks, woodland edge, gardens and dry grassland with early flowers and nearby mining-bee burrows. The adult needs nectar in the open; the larva needs a solitary bee nest in bare soil.
Rarity
Relatively common · 12/100
Native range
Native range keys: europe, north_america, north_africa_middle_east, central_asia. Sunny banks, woodland edge, gardens and dry grassland with early flowers and nearby mining-bee burrows. The adult needs nectar in the open; the larva needs a solitary bee nest in bare soil.
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