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Hydrotaea irritans (view source)

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[[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]]

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*Also known as the 'head fly'

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*''Hydrotaea irritans'' the main species of veterinary importance

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==Hosts==

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Cattle, sheep, and horses.

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*Mainly a problem of sheep

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**In some areas it is the most numerous fly of cattle and horses

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==~~Recognition~~==

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*Similar to ''Musca spp.''

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*Olive green abdomen

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*4-7mm in length

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==Identification==

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''H. irritans'' is morphologically very similar in appearance to [[Musca spp.|''Musca'']]. The adult flies are 4-7mm in length, have a green thorax and a yellow abdomen.

==Life Cycle==

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*Eggs laid in decaying vegetation, ~~faeces~~ and ~~in carrion (in~~ the ~~summer months)~~

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The female lays eggs in the faeces, or decaying vegetation. Eggs then hatch into larvae in the autumn, and begin to mature. However, development is haltered until the following spring. They then undergo pupation, and maturation is complete. Adults emerge in summer.

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*Emerging larvae overwinter ([[WikiWords#D|'''diapause''']]) and ~~pupate in spring~~

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*Adult flies emerge in ~~the~~ summer

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*'''One generation per year'''

Cmcory

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Hydrotaea irritans (view source)

Revision as of 16:17, 20 July 2010

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