Horse Fly vs Giant Western Crane Fly

Side-by-side species comparison

Attribute Horse Fly Giant Western Crane Fly
Scientific Name Tabanus bovinus Holorusia hespera
Order Diptera Diptera
Family Tabanidae Tipulidae
Size 20-25 mm 35-45 mm body length
Habitat Wetlands Forests
Diet Blood Feeders Detritivores
Regions Europe, Asia Western North America
Conservation Least Concern Least Concern

Horse Fly

A large, stout fly with huge iridescent compound eyes that display rainbow patterns. Only females bite, using scissor-like mouthparts to slash skin and lap up blood.

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Did You Know?

Horse fly eyes display stunning iridescent bands of color created by structural interference patterns, and scientists have used their anti-reflective eye structure to design better solar panels.

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.