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===Screw Worm Myiasis===
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{{OpenPagesTop}}
[[Image:Screw Worm.jpg|right|thumb|150px|Screw worm larvae - John Kucharski - Wikimedia Commons]]
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Also known as: '''''Screw Worm — Old world screwworm'''''
*''C. bezziana'' cause myiasis in both animals and humans
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*Located mainly in tropical regions
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{{Taxobox
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|name              = ''Chrysomya bezziana
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|kingdom            =
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|phylum            =
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|class              = [[:Category:Insecta|Insecta]]
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|sub-class          =
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|order              = Diptera
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|super-family      =
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|family            = [[Calliphoridae]]
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|sub-family        =
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|genus              =
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|species            =''Chrysomya bezziana
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}}
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*Larvae are '''obligate''' parasites
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[[Image:Chrysomya bezziana.jpg|thumb|right|250px|''Chrysomya bezziana'' - FAO/IAEA, Wikimedia Commons]]
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==Hosts==
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Cattle, sheep, dogs and occasionally humans.
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'''Recognition'''
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==Identification==
*Similar to [[Calliphoridae|''Calliphora spp.'']]
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''C. bezziana'' is a blue/green fly, with 4 longitudinal black stripes, and around 8-10mm in length.  They are similar to [[Calliphoridae|''Calliphora spp.'']], and are of the family [[Calliphoridae]].
**Iridescent
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**Clear wings
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**Blue abdomen
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*Longitudinal stripes on thorax
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==Life Cycle==
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''C. bezziana'' is an obligate agent of myiasis.  The female lays eggs in fresh open wounds or body orifices.  Eggs then hatch and the larvae begin to penetrate the skin. The larvae then mature and begin to pupate, before becoming fully reproductive adults.
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*Larvae have bands of spines
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The complete life cycle from egg to adult is 2-3 weeks.
**Look like screws
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{{Learning
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|literature search = [http://www.cabdirect.org/search.html?q=title%3A%28%22Chrysomya+bezziana%22%29 ''Chrysomya bezziana'' publications]
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}}
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'''Life cycle'''
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*Eggs laid in wounds or body cavities
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*Larvae feed as colonies
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{{OpenPages}}
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*Larvae drop to the ground to pupate
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[[Category:Myiasis_Producing_Flies]]
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[[Category:Expert_Review]]
'''Pathogenesis'''
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*Spiracles are exposed as larvae feed which expands the wound
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**Creates a foul smelling lesion
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*Cause irritation and pyrexia
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'''Control'''
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*In the USA
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**Mass eradication through the release of sterile males
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**Currently only persists where flies have migrated across the Mexican border
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*In Africa
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**Introduced into Libya through the importation of infested livestock
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**Sterile males released
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**Eradication occurred in 1991
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[[Category:Myiasis_Producing_Flies]]
 
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