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[[Image:Hydrotaea irritans male.jpg|thumb|right|150px|H.irritans male - Copyright Alan Hadley]]
{{Taxobox
|name = Hydrotaea irritans
|kingdom =
|phylum = [[:Category:Arthropods|Arthropoda]]
|class = [[Insecta]]
|sub-class =
|order = Diptera
|super-family =
|family = Trichodectidae
|sub-family =
|genus =
|species =
}}
Also known as: '''''Sheep headfly
==Hosts==
Cattle, sheep, and horses. In cattle, it may be associtaed with the transmission of pathogens causing [[Summer Mastitis|summer mastitis]].
==Identification==
''H. irritans'' is morphologically very similar in appearance to [[Musca spp.|''Musca'']], and is of the class [[Insecta]]. The adult flies are 4-7mm in length, have a green thorax and a yellow abdomen.
==Life Cycle==
==Life Cycle==
The female lays eggs in the faeces, or decaying vegetation. Eggs 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 the summer.
{{Learning
|flashcards = [[Nuisance_Flies_Flashcards|Nuisance Flies Flashcards]]
|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=%22Hydrotaea+irritans%22&occuring1=title&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&x=61&y=9&publishedstart=yyyy&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all ''Hydrotaea irritans'' publications]
}}
{{review}}
{{OpenPages}}
[[Category:Nuisance Flies]]
[[Category:Nuisance Flies]]
[[Category:Expert_Review]]