Likely fungus gnat (adult)

Moist soil, decaying organic matter, fungi, and damp indoor plant media. Adults commonly occur around houseplants, greenhouses, and shaded vegetation.

Larvae feed mainly on fungi, algae, and decaying organic matter, sometimes grazing on fine roots. Adults generally consume little, occasionally taking liquids such as nectar.

Adults are weak fliers and often crawl or hover near soil surfaces; they are attracted to moisture and light. Larvae develop in moist substrates and can complete several generations annually indoors.

Usually harmless to people and pets. Larvae may damage seedlings and roots when abundant, while contributing to decomposition and serving as prey for other organisms.