Violet Ground Beetle vs Common Fungus Gnat

Side-by-side species comparison

Attribute Violet Ground Beetle Common Fungus Gnat
Scientific Name Carabus violaceus Bradysia impatiens
Order Coleoptera Diptera
Family Carabidae Mycetophilidae
Size 20-35mm 2-4 mm
Habitat Underground Underground
Diet Predators Fungus Feeders
Regions Europe Cosmopolitan
Conservation Least Concern Least Concern

Violet Ground Beetle

A large black beetle with violet or purple margins on its elytra and thorax. It is nocturnal and hides under logs and stones during the day.

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Did You Know?

When threatened, it releases a foul-smelling liquid from its abdomen to deter predators.

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.