Tiger Bee Fly

Photo of a tiger bee fly resting on the wood of a privacy fence
Scientific Name
Xenox tigrinus
Bombyliidae (bee flies) in the order Diptera (flies)

The tiger bee fly is one of about 800 species of bee flies in North America. It parasitizes the larvae of carpenter bees. Its wing markings are distinctive. Most people see this species hovering around wooden privacy fences, wooden roof overhangs, and similar wooden surfaces. The female tiger bee fly deposits her eggs in places where carpenter bees have laid their eggs. The bee fly larvae eat the carpenter bee larvae.

Bee flies are true flies and are not bees at all. Lacking the ability to sting or to bite, their bee mimicry helps them avoid many would-be predators.

Learn more about the tiger bee fly and other bee flies (family Bombyliidae) on their family page.


Length: about ¾ inch (not including wings or appendages)

Considering how unwelcome carpenter bees can be, since they bore holes into wooden objects such as porch railings and roof overhangs, the tiger bee fly is a friend.

Tiger bee flies rely on populations of their hosts (carpenter bees) to survive.

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About Land Invertebrates in Missouri
Invertebrates are animals without backbones, including earthworms, slugs, snails, and arthropods. Arthropods—invertebrates with “jointed legs” — are a group of invertebrates that includes crayfish, shrimp, millipedes, centipedes, mites, spiders, and insects. There may be as many as 10 million species of insects alive on earth today, and they probably constitute more than 90 percent all animal species.