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Created page with 'thumb|right|150px|H.irritans female - Copyright Alan Hadley [[Image:Hydrotaea irritans male.jpg|thumb|right|150px|H.irritans male - Copyright Ala…'
[[Image:Hydrotaea irritans.jpg|thumb|right|150px|H.irritans female - Copyright Alan Hadley]]
[[Image:Hydrotaea irritans male.jpg|thumb|right|150px|H.irritans male - Copyright Alan Hadley]]
*Also known as the 'head fly'
*''Hydrotaea irritans'' the main species of veterinary importance
*Mainly a problem of sheep
**In some areas it is the most numerous fly of cattle and horses
==Recognition==
*Similar to ''Musca spp.''
*Olive green abdomen
*4-7mm in length
==Life Cycle==
*Eggs laid in decaying vegetation, faeces and in carrion (in the summer months)
*Emerging larvae overwinter ([[WikiWords#D|'''diapause''']]) and pupate in spring
*Adult flies emerge in the summer
*'''One generation per year'''
==Pathogenesis==
*Cattle
**Evidence suggests that they transmit summer mastitis
*Sheep
**Cause extreme irritation
***Mouthparts rasp the skin to feed on secretions and exudate
**Leads to self-inflicted damage
***E.g. 'Broken Head'
**Secondary bacterial infection may occur
**[[Myiasis Producing Flies#Calliphoridae|Blowfly strike]] may follow
[[Image:Hydrotaea irritans male.jpg|thumb|right|150px|H.irritans male - Copyright Alan Hadley]]
*Also known as the 'head fly'
*''Hydrotaea irritans'' the main species of veterinary importance
*Mainly a problem of sheep
**In some areas it is the most numerous fly of cattle and horses
==Recognition==
*Similar to ''Musca spp.''
*Olive green abdomen
*4-7mm in length
==Life Cycle==
*Eggs laid in decaying vegetation, faeces and in carrion (in the summer months)
*Emerging larvae overwinter ([[WikiWords#D|'''diapause''']]) and pupate in spring
*Adult flies emerge in the summer
*'''One generation per year'''
==Pathogenesis==
*Cattle
**Evidence suggests that they transmit summer mastitis
*Sheep
**Cause extreme irritation
***Mouthparts rasp the skin to feed on secretions and exudate
**Leads to self-inflicted damage
***E.g. 'Broken Head'
**Secondary bacterial infection may occur
**[[Myiasis Producing Flies#Calliphoridae|Blowfly strike]] may follow