Sciarid flies
where they can cause enormous damage. Sciarid flies are usually found in damp, humid environments, and appear very commonly in greenhouses throughout [...] feeding on the roots. The larvae feed mainly on decaying plant material and on algae and fungi present in the soil. They, however, can also feed on [...] plant roots. The larvae can grow to 5 to 12 mm in length and 0.5 to 1.5 mm in diameter. They are legless and have a conspicuous