The Phorid Fly
Phorid flies or humpbacked flies belong to the family Phoridae. These flies are also known as scuttle flies because of their habit of scampering across a surface instead of flying away. Phorid flies are often mistaken for fruit flies or gnats and are common across the world.
HOW TO IDENTIFY PHORID FLIES
They are as small as fruit flies and are often mistaken for the same. Some of their characteristic physical features are –
- Body length is 0.5mm to 5.5mm
- Body color can be brown, black or yellow
- The thorax is arched, given it a humpbacked appearance
- Rounded head
- Wings are clear and transparent
Appearance, Behavior, and Signs
Phorid flies are found across the world, but they are especially common in the tropics. These tiny flies feed on rotting organic matter, including decaying plants and dead animals. They also feed on honeydew and nectar, and several species of Phoridea are predators of earthworms, snails and insect eggs. They also feed on rotting fruits and vegetables, and even leftover food items.
Some phorid flies fly in swarms, although their characteristic movement is the fast scuttling away on foot. They have short, erratic flight sessions.
They are commonly found near drainage systems and garbage bins. The flies breed in stagnant water and organic matter. To look for signs of phorid flies, check your kitchen, dustbins, washrooms and plumbing systems. Phorid flies often expand their area of exploration from the source of food they have found. This means they can spread throughout your house.