Common Fungus Gnat vs Giant Western Crane Fly

Side-by-side species comparison

Attribute	Common Fungus Gnat	Giant Western Crane Fly
Scientific Name	Bradysia impatiens	Holorusia hespera
Order	Diptera	Diptera
Family	Mycetophilidae	Tipulidae
Size	2-4 mm	35-45 mm body length
Habitat	Underground	Forests
Diet	Fungus Feeders	Detritivores
Regions	Cosmopolitan	Western North America
Conservation	Least Concern	Least Concern

Common Fungus Gnat

A small, delicate dark fly with long legs and antennae that commonly infests houseplant soil. Adults are weak fliers that hover near potted plants and are attracted to light.

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Did You Know?

Fungus gnats are one of the most common houseplant pests worldwide, with larvae damaging roots of seedlings.

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.