Image courtesy of Wikipedia

Diptera: Psychodidae, Diptera.

A Drain Fly also known as a Moth Fly. Moth fly adults can be quite annoying in homes, appearing from sinks and bathtub drains. These pests breed in tremendous numbers in sewer plants and are easily blown towards homes by the wind. Their small size enables them to penetrate ordinary fly screens. There have been noted cases of bronchial asthma caused by inhaling the dust resulting from the disintegration of such small flies.