Mydas Fly vs Giant Western Crane Fly

Side-by-side species comparison

Attribute	Mydas Fly	Giant Western Crane Fly
Scientific Name	Gauromydas heros	Holorusia hespera
Order	Diptera	Diptera
Family	Mydidae	Tipulidae
Size	40-60 mm body	35-45 mm body length
Habitat	Forests	Forests
Diet	Detritivores	Detritivores
Regions	South America	Western North America
Conservation	Data Deficient	Least Concern

Mydas Fly

The largest fly in the world at up to 60 mm long with a 100 mm wingspan. A wasp mimic with black body and orange-red markings. Larvae develop in ant nests.

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Did You Know?

At 6 cm long with a 10 cm wingspan, this is the worlds largest fly — it mimics a spider wasp so convincingly that even entomologists can be fooled at first glance.

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.