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Fungus Gnat
(John Obermeyer, Purdue University)
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Common Name: Fungus Gnat

Order: Diptera

Family: Sciaridae


Pest Status: Normally fungus gnats are nuisance pests, but when their populations become great, they can be pests in sensitive environments such as hospitals or food plants. In homes fungus gnats are usually associated with over-watered plants. When the potting soils are allowed to dry out, fungus growth ceases and fungus gnats disappear.

Appearance: Fungus gnats are normally quite small and have one pair of long, delicate wings and long legs.

Life Cycle: Eggs are often laid in moist soils or other organic matter. When the eggs hatch, the larvae feed on the mold and fungi that develop.

Where to Collect: Fungus gnats are very common near mulched flowerbeds in the early spring. They may be easily collected from windows close by as they are attracted to lights.