Fungus gnats (likely larvae/adults)

Moist potting soil, decaying organic matter, greenhouses, and humid indoor areas. Adults may rest on windows, walls, or nearby fabrics.

Larvae feed mainly on fungi, algae, and decaying organic material in soil, sometimes nibbling plant roots. Adults consume little, often taking moisture or not feeding.

Adults are weak fliers and commonly walk or hover near houseplants; larvae develop in damp soil and organic debris. Several generations can occur yearly indoors.

Usually harmless to people and pets, though heavy larval infestations can damage seedlings and roots. They help decompose organic matter and recycle nutrients.