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*Also known as 'house' and 'face' flies
*Includes ''Musca domestica'' the house fly and ''Musca autumnalis'' the face fly
*Found in temperate regions
*The house fly is present both inside and outside of buildings
*The face fly is one of the most numerous flies which annoy cattle
**Attracted to the head and upper parts of the body
==Recognition==
*7.5mm long
*Sponge-like labellum mouthparts
*Grey thorax with longitudinal stripes
*Yellow abdomen with a single black stripe
==Life Cycle==
*Eggs laid in rotting manure, hatch and pass through pupal and larval stages before emerging
*Eggs hatch within 12 hours of being deposited
*Life cycle takes '''12 days'''
*Flies may overwinter as adults
==Pathogenesis==
*Production losses
**Reduced weight gain
**Reduced milk yield
**Fly worry
*Disease transmission
**Viruses
***E.g. Coxsackie, enteroviruses, poliomyelitis
**Bacteria
***E.g. [[Bacillus species#Bacillus anthracis|Anthrax]], [[Escherichia coli|''E.coli'']], [[Salmonella|''Salmonella'']], [[Shigella|''Shigella'']], [[Moraxella bovis|New Forest Eye Disease]]
**Helminths
***E.g. Intermediate hosts for [[Parasitic skin infections - Pathology#Helminths|''Habronema'']] in horses, some poultry tapeworms, [[Parafilaria spp.|''Parafiliaria'']] and [[Cattle#Other Cattle Nematodes|''Thelazia'']] in cattle
*Feeds on secretions from the eyes, nose and mouth as well as blood left in wounds by other flies
==Control==
*Fly control in breeding and resting sites (to reduce the source)
**Breeding sites
***Good sanitation
***Collect dung in heaps
***Spray surface of heaps with insecticide to kill surviving adults and larvae
***Biological control
**Resting sites
***Spray inside and outsides of buildings with insecticide
*Fly control on the host
**Wide range of products available
**Nil or short withdrawal period needed for milking animals or animals going for slaughter[[Category:Parasites]]