Giant Western Crane Fly vs Narcissus Bulb Fly

Side-by-side species comparison

Attribute Giant Western Crane Fly Narcissus Bulb Fly
Scientific Name Holorusia hespera Merodon equestris
Order Diptera Diptera
Family Tipulidae Syrphidae
Size 35-45 mm body length 10-15 mm
Habitat Forests Underground
Diet Detritivores Nectar Feeders
Regions Western North America Europe, North America (introduced), Oceania (introduced)
Conservation Least Concern Least Concern

Giant Western Crane Fly

North America's largest crane fly with a wingspan approaching 80 mm. It inhabits mossy stream banks in western mountain forests.

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Did You Know?

It is the largest fly in North America and one of the largest true flies in the world.

Narcissus Bulb Fly

A bumble bee-mimicking hoverfly that comes in multiple color forms matching different bumblebee species. Its larvae bore into and destroy daffodil and narcissus bulbs.

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Did You Know?

It exists in multiple color forms, each mimicking a different bumblebee species found in the same habitat.