Japanese Soldier Fly vs Common Fungus Gnat

Side-by-side species comparison

Attribute Japanese Soldier Fly Common Fungus Gnat
Scientific Name Ptecticus tenebrifer Bradysia impatiens
Order Diptera Diptera
Family Stratiomyidae Mycetophilidae
Size 10-14 mm 2-4 mm
Habitat Forests Underground
Diet Scavengers Fungus Feeders
Regions East Asia Cosmopolitan
Conservation Least Concern Least Concern

Japanese Soldier Fly

A slender soldier fly with a metallic greenish-black body and elongate antennae. It is commonly found near decaying organic matter in gardens and forests across East Asia.

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Did You Know?

Like the black soldier fly, species of Ptecticus are being studied as potential bioconversion agents for organic waste.

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.