South American Swallowtail vs Bee Fly

Side-by-side species comparison

Attribute South American Swallowtail Bee Fly
Scientific Name Heraclides thoas Bombylius major
Order Lepidoptera Diptera
Family Papilionidae Bombyliidae
Size 100-130 mm wingspan 8-18 mm
Habitat Orchards Underground
Diet Nectar Feeders Nectar Feeders
Regions Brazil, Argentina, Central America, southern United States Europe, North America, Asia
Conservation Least Concern Least Concern

South American Swallowtail

A large swallowtail butterfly with black wings bearing bright yellow band patterns and prominent tail extensions. It is a strong, rapid flier.

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Did You Know?

When threatened, its caterpillar extends a bright orange forked organ called an osmeterium that releases a foul smell.

Bee Fly

A fuzzy bee mimic with a long fixed proboscis used for hovering in front of flowers to drink nectar. Despite its innocent appearance, larvae are parasites of solitary bee nests.

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Did You Know?

Bee flies are aerial bombers — females flick their eggs into the entrance holes of ground-nesting bee burrows while hovering, never landing.