Mycetophilidae, commonly known as fungus gnats, are small, delicate flies that are often found in damp, decaying organic matter. These insects are typically dark in color and have long legs and antennae. They play an important role in the ecosystem by helping to decompose fungi and other organic materials, which enriches the soil. Fungus gnats are often seen around houseplants, where they can become a nuisance. Their larvae feed on fungi and organic matter in the soil, which can sometimes harm plant roots. Understanding their life cycle can help gardeners manage their populations effectively and maintain healthy plants.