Fruit fly or Gnat larva

Damp environments, decaying organic matter, overripe fruit, or moist houseplants

Larvae typically consume fungi, algae, or fermenting organic material and bacteria

Larvae are often found crawling in moist areas and eventually pupate into small flying adults; they are highly dependent on high humidity

Generally harmless to human health, though they can be a nuisance in homes; some species can damage the roots of houseplants if present in large numbers