Sewer flies are also called filter flies/drain flies. They belong to the family Psychodidae. They breed in drains, sewer, septic tanks, and in the soil contaminated with sewage. They are not good at flying and gather around standing water. They move from surface to surface by jumping. Their bodies are covered with numerous hair.

Silky Terrier Dog Breed Playing Aro... Silky Terrier Dog Breed Playing Around

These flies are very common and can reproduce in just 48 hours, making it easy to find an infestation in little time. This article will describe the physical appearance of Sewer flies and how do they look like.

What Sewer Flies Look Like?

Drain flies are extremely small and ranges between 2-5 millimeters in length. They are usually black, but their color may vary from tan to light grey. They have a pair of wings, six legs, and antennae. The body hairs and the unique pattern of veins on wings give the body an overall fuzzy appearance.

Their wings fold over the body and are held roof-like over the body when at rest. Sewer flies are poor fliers, and usually, they are seen hopping along the walls and other surfaces. Their flight is short with jerky lines. Their wings will become powdery smudge when crushed or mashed.

The larvae of sewer flies are wormlike, 3/8 inches long, and without legs. 

The larvae appear grey with darker spots on the ends. The larvae don’t have eyes and are legless. There also presents a dark breathing tube on one end of the larva that extends out of the film to obtain air. They look the same as gnats and fruit flies but are easily distinguished by their round, fuzzy bodies and moth-like wings. They can be easily identified by the presence of a unique pattern of veins in their wings. Their color is also different from fruit flies.