Fungus gnat (likely)

Moist soil, decaying organic matter, greenhouses, and indoor potted plants; adults may gather near windows and lights.

Larvae feed mainly on fungi, algae, and decaying plant material in soil; some may nibble roots. Adults consume little, often taking nectar or not feeding.

Adults are weak fliers and commonly walk or hover near soil and illuminated surfaces. They reproduce in damp potting mix, where larvae develop before pupating and emerging as adults.

Usually harmless to people and pets, with no biting or stinging. Larvae help decompose organic matter but can damage seedlings and roots when populations are high.