• Genus: Musca
• Species: domestica
• Key diagnostic traits:
• Arista (bristles on antenna) are plumose or feather-like
• Proboscis for sponging mouthparts (extraoral aqueous feeding)
• Four dark longitudinal stripes on the thorax
• Two wings (attached to the mesothorax) and two halteres (small, club-shaped gyroscopic organs located behind the wings on the metathorax)
• Fourth vein on the wing bends forward almost reaching third vein
• Sides of abdomen are yellowish and may be translucent depending upon lighting and nutrition
• Dark band covers the final abdominal segments

Identification:

HFs are small to medium-sized (6-8 mm), with reddish compound eyes and a gray thorax featuring four dark stripes. Flight is rapid and erratic, with top speed reaching 8 km/h (5 mph). As a generalist, HF is oviparous and places eggs in moist (20% to 80%), fermenting and putrefactive organic matter.

Habitat & behavior:

• Found in and around dumpsters, garbage, food waste, compost, animal bedding, and animal feces.
• Active during warm daylight hours (photopic, diurnal).
• Significant synanthrope (“together with humans”).
• Strong olfactory response (sense of smell) to chemical cues or volatile organic compounds (VOCs) over long distances.
• Attracted to carbohydrate and protein-rich substrates.
• Frequent interaction with contaminated surfaces.

Public health significance:

HFs are significant mechanical vectors of numerous human pathogens. HF tarsal segments or “feet” and body can carry over 100 different pathogens resulting from interaction with heavily contaminated surfaces and materials. Diseases associated with HF include Cholera, Dysentery, and Salmonellosis. HF persistence requires strict hygiene and monitoring in and around sensitive food and healthcare facilities.

Lifecycle (Holometabolous or “whole change”)

• Reproduction: Oviparous or places eggs
• Development: Egg (resource sites), larva (moist), pupa (dry), adult (free-ranging)
• Egg to adult in 7-10 days in warm, moist conditions (25-30°C or 77-86°F)
• Females highly fecund, placing eggs in several batches
• Feeds upon decaying organic matter, feces, and carbohydrate substances

Quick facts:

Environmental role:

While a both a significant nuisance and public health risk, HF contributes to the decomposition process by breaking down organic waste. HF presence is an indicator of poor hygienic conditions and can be used as a bio-monitoring tool for sanitation lapses in and around sensitive environments.