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Bee flies

Bombyliidae
Grosser Wollschweber Bombylius major.jpg
Bombylius major
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Suborder: Brachycera
Infraorder: Asilomorpha
Superfamily: Asiloidea
Family: Bombyliidae
Latreille, 1802
Subfamilies
Synonyms

Phthiriidae
Usiidae
Systropodidae


Phthiriidae
Usiidae
Systropodidae

The Bombyliidae are a family of flies. Their common name is bee flies. Adults generally feed on nectar and pollen, some being important pollinators. Larvae generally are parasitoids of other insects.

The Bombyliidae are a large family of flies comprising hundreds of genera, but the lifecycles of most species are known poorly, or not at all. They range in size from very small (2 mm in length) to very large for flies (wingspan of some 40 mm). When at rest, many species hold their wings at a characteristic "swept back" angle. Adults generally feed on nectar and pollen, some being important pollinators, often with spectacularly long probosces adapted to plants such as Lapeirousia species with very long, narrow floral tubes. Unlike butterflies, bee flies hold their proboscises straight, and cannot retract them. In parts of East Anglia, locals refer to them as beewhals, thanks to their tusk-like appendages. Many Bombyliidae superficially resemble bees and accordingly the prevalent common name for a member of the family is bee fly. Possibly the resemblance is Batesian mimicry, affording the adults some protection from predators.

The larval stages are predators or parasitoids of the eggs and larvae of other insects. The adult females usually deposit eggs in the vicinity of possible hosts, quite often in the burrows of beetles or wasps/solitary bees. Although insect parasitoids usually are fairly host-specific, often highly host-specific, some Bombyliidae are opportunistic and will attack a variety of hosts.


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Wikipedia

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