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Diptera.info :: General Diptera forums :: Overviews
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How to Identify a Fly
Tony T
#1 Print Post
Posted on 21-10-2014 15:47
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Location: New Brunswick, Canada
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Joined: 08.02.07

1] Post image on Diptera.info. Keep specimen in case more information is needed.
Specimen will always be identified at least to Family:
SEE HERE
Family: Psilidae (thanks to ruud van der weele & John Carr)
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Tony T
#2 Print Post
Posted on 21-10-2014 15:49
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Location: New Brunswick, Canada
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2] If specimen cannot be immediately identified beyond family, hope that someone will reference a key:
SEE HERE
(thanks to John Carr)
Use the key to further ID specimen
Buck & Marshall Key:
1 First flagellomere 2.5-4.0x as long as high..... 2
flagellomere is 2.7x as long as high
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Tony T
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Posted on 21-10-2014 15:51
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Location: New Brunswick, Canada
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2: Tergites 2-4 more or less extensively bare but some marginal bristles always present....5

flight period mid-July to late September in Canada (Canadian specimen collected October 17).
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Tony T
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Posted on 21-10-2014 15:53
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5: Parafacials at narrowest point less than half as wide as vertical diameter (height) of 1st flagellomere:
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Tony T
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Posted on 21-10-2014 15:54
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Location: New Brunswick, Canada
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two pairs of subequal dorsocentral bristles:

.......................................................... Psila perpolita
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