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Diptera.info :: Identification queries :: Diptera (adults)
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Sepsidae
Stephen
#1 Print Post
Posted on 18-03-2007 22:15
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Location: West Virginia USA
Posts: 1322
Joined: 12.04.05

I photographed this fly at Sugar Maple sap in the woods, but then photographed another one half a kilometer away in an open area.

Sepsidae? Can anyone provide further information on this fly?

West Virginia USA, 14 March 2007. Size: 3.5 mm.
Stephen attached the following image:


[102.8Kb]
--Stephen

Stephen Cresswell
www.americaninsects.net
 
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Nikita Vikhrev
#2 Print Post
Posted on 18-03-2007 22:22
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Location: Moscow, Russia
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I think that female of Sepsis sp. is maximum out of this image.
Nikita Vikhrev - Zool Museum of Moscow University
 
Stephen
#3 Print Post
Posted on 18-03-2007 22:23
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Another view, different individual.
Stephen attached the following image:


[117.81Kb]
--Stephen

Stephen Cresswell
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Nikita Vikhrev
#4 Print Post
Posted on 18-03-2007 22:30
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Much more usefull image for ID.
But I have neither key nor knowledge for Nearctic Sepsis...
Nikita Vikhrev - Zool Museum of Moscow University
 
Dmitry Gavryushin
#5 Print Post
Posted on 19-03-2007 08:17
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Ozerov A.L. 2000. A revision of the Nearctic species of the genus Sepsis Fallen, 1810 (Diptera, Sepsidae) // Russian Entomological Journal. Vol. 9, No. 2, P. 161?176
 
Stephen
#6 Print Post
Posted on 19-03-2007 10:26
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A female of the genus Sepsis? By the way, how do we determine that this is a female from the photo?

Thanks, Nikita and Black for replying.
--Stephen

Stephen Cresswell
www.americaninsects.net
 
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Nikita Vikhrev
#7 Print Post
Posted on 19-03-2007 14:49
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First image with fatty abdomen looks female, the second one looks male - abdomen thiner and it seems that there are weapon (spines, strong setas) on ventral surface of f1.
Nikita
Nikita Vikhrev - Zool Museum of Moscow University
 
Andrey Ozerov
#8 Print Post
Posted on 21-03-2007 10:51
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I think it is Sepsis neocynipsea Melander et Spuler, 1917
 
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23.06.25 18:10
If you have some spare money, there is a copy (together with keys to pupae and larvae) for sale by Hermann L. Strack, Loguivy Plougras, France

23.06.25 11:18
Appreciate it, Tony Irwin! I got the hint to use the key next to Langton and Pinder key for females of Chironomidae. So no specific queries, except the keys... I will keep this on my list and hope th

19.06.25 15:33
I have the hard copy book, if you have any specific queries, but I'm not scanning the 500+ pages!

02.06.25 18:26
Anyone has "Chironomidae of the Holarctic region. Keys and diagnoses. Part 3. Adult Males Entomologica Scandinavica Supplement 34"? smolwaarneming@gma
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I have Russian Coenosia. nikita6510@ya.ru

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Is someone able to share with me "A key to the Russian species of the genus Coenosia"?

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