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Created page with '*Also known as louse flies *The two genera of veterinary importance are ''Hippobosca'' and ''Melophagus'' ===''Hippobosca'' spp.=== *Also known as forest flies *Only parasit…'
*Also known as louse flies
*The two genera of veterinary importance are ''Hippobosca'' and ''Melophagus''
===''Hippobosca'' spp.===
*Also known as forest flies
*Only parasitises horses and cattle
*Only found in the Old World
*Large numbers found around the perineum and inner thighs
'''Recognition'''
*1cm long
*Reddish brown
*Yellow spots on thorax and abdomen
*Clear wings
*Reduced wings with veins crowded towards anterior margins
**Not a strong flier
*Forward pointing proboscis which can be retracted into head when not feeding
**Both males and females suck blood
'''Life cycle'''
*Adults are on the wing between May and October
*Adults mate on the host
*Single larvae laid in soil or damp humus
*Adult flies emerge the following spring
'''Pathogenesis'''
*Irritation and annoyance from bites
*Mechanical vectors of non-pathogenic ''Trypanosoma theileri'' in cattle
'''Control'''
*Topical [[Ectoparasiticides|insecticide]] application
**Repellents with residual action
===''Melophagus'' spp.===
*Also known as sheep ked
*Found worldwide
*Bites sheep and goats
**A separate species is found on deer
'''Recognition'''
*4-6mm long
*Hairy
*Forward pointing proboscis
*Short head
*Reddish brown colouring
*Dorso-ventrally flattened
*'Tick-like' in appearance
*'''Wingless'''
*Strong legs and claws
'''Life cycle'''
*Whole life cycle spent '''on''' the host
**Adults may survive for 1 week off the host
*Single larvae laid on fleece which pupate
*Adult keds emerge a '''few weeks to a few months''' after pupating depending on environmental temperature
'''Pathogenesis'''
*Most numerous in '''autumn and winter'''
*Located in the superficial layers of the fleece
**This aids transmission
*Long wooled breeds are most susceptible to infection
*Cause anaemia
*Wool damage
**Irritation and self-inflicted damage
**Staining by ked faeces
*Intermediate host for non-pathogenic ''Trypanosoma melophagium'' in sheep
'''Control'''
*Sheep dipping and spraying
*Shearing to decrease numbers
[[Category:Parasites]][[Category:Flies]][[Category:Biting_Flies]]
*The two genera of veterinary importance are ''Hippobosca'' and ''Melophagus''
===''Hippobosca'' spp.===
*Also known as forest flies
*Only parasitises horses and cattle
*Only found in the Old World
*Large numbers found around the perineum and inner thighs
'''Recognition'''
*1cm long
*Reddish brown
*Yellow spots on thorax and abdomen
*Clear wings
*Reduced wings with veins crowded towards anterior margins
**Not a strong flier
*Forward pointing proboscis which can be retracted into head when not feeding
**Both males and females suck blood
'''Life cycle'''
*Adults are on the wing between May and October
*Adults mate on the host
*Single larvae laid in soil or damp humus
*Adult flies emerge the following spring
'''Pathogenesis'''
*Irritation and annoyance from bites
*Mechanical vectors of non-pathogenic ''Trypanosoma theileri'' in cattle
'''Control'''
*Topical [[Ectoparasiticides|insecticide]] application
**Repellents with residual action
===''Melophagus'' spp.===
*Also known as sheep ked
*Found worldwide
*Bites sheep and goats
**A separate species is found on deer
'''Recognition'''
*4-6mm long
*Hairy
*Forward pointing proboscis
*Short head
*Reddish brown colouring
*Dorso-ventrally flattened
*'Tick-like' in appearance
*'''Wingless'''
*Strong legs and claws
'''Life cycle'''
*Whole life cycle spent '''on''' the host
**Adults may survive for 1 week off the host
*Single larvae laid on fleece which pupate
*Adult keds emerge a '''few weeks to a few months''' after pupating depending on environmental temperature
'''Pathogenesis'''
*Most numerous in '''autumn and winter'''
*Located in the superficial layers of the fleece
**This aids transmission
*Long wooled breeds are most susceptible to infection
*Cause anaemia
*Wool damage
**Irritation and self-inflicted damage
**Staining by ked faeces
*Intermediate host for non-pathogenic ''Trypanosoma melophagium'' in sheep
'''Control'''
*Sheep dipping and spraying
*Shearing to decrease numbers
[[Category:Parasites]][[Category:Flies]][[Category:Biting_Flies]]