Sanford D. Porter, USDA-ARS, Center for Medical, Agricultural and Veterinary Entomology
Phorid Flies
General Descriptions
Also known as humpbacked flies because of their arched thorax, phorids are tiny, dark-colored flies. Their larvae
feed on a wide variety of decomposing organic debris of plant or animal origin. If suitable materials are present,
huge populations of phorid flies can build up quickly. Sources of infestation include liquefied garbage, sewage
and carrion, often hidden in places difficult to inspect and access.
General Control
Eliminate fly breeding sites by locating and discarding the attracting material. Inspect and sanitize trash
receptacles and collection areas, floor drains and broken floor tiling, and remove accumulations of liquefied
organic material.