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Diptera.info :: Identification queries :: Diptera (adults)
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Myopa vicaria
Christine Devillers
#1 Print Post
Posted on 04-03-2008 23:25
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I found this Myopa near nests of Andrena clarkella (3/3/2008, Spa, Belgium, bad weather very cold:8?C).
Size : 11 mm from head to end of the wings.
Could it be M.tessellatipennis?

They were three Andrena clarkella with a cut and empty abdomen. Could it be in relation with the Myopa?
Christine Devillers attached the following image:


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Edited by Christine Devillers on 08-03-2008 23:33
 
Christine Devillers
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Posted on 04-03-2008 23:26
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pic 2
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Christine Devillers
#3 Print Post
Posted on 04-03-2008 23:39
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pic 3
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Christine Devillers
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Posted on 04-03-2008 23:40
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Posted on 04-03-2008 23:41
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Posted on 04-03-2008 23:42
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pic 6
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Posted on 04-03-2008 23:44
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Andrena clarkella (near nests) with cut abdomen
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Andre
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Posted on 05-03-2008 01:40
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Wow, this is great! I never heard of a recording like this before... I sent it to an Andrena specialist.
Looking at the long erect hairs on the tip of the abdomen, I think the Myopa is vicaria, but I am not sure. Vicaria is an extremely early species, even if 3/3 is very early indeed. Would need a specimen in hand to make a certain ID on this species.
 
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jorgemotalmeida
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Posted on 05-03-2008 12:55
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Myopa are always awesome. Smile I think they are the only genus that can support cold temperatures among the conopids.
I will seek carefully for bees/wasps. Smile
 
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Christine Devillers
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Posted on 05-03-2008 13:22
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Thank you
When I found the Andrena, they were still alive. The legs moved very slowly.
Edited by Christine Devillers on 05-03-2008 13:26
 
Andre
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Posted on 05-03-2008 13:50
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Interesting... the Andrena must have been infested one year earlier!
 
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jhstuke
#12 Print Post
Posted on 05-03-2008 15:46
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The picture could show Myopa tessellatipennis - for a sfe identification I would need a better picture of the wing. I would be very surprised if it turns out that the Myopa emerged from those bees. But this should be easily to proof - there will be the exuvium within the abdomen of the Andrena if the Myopa emerged.

Jens-Hermann
 
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Christine Devillers
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Posted on 06-03-2008 19:45
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Does these others photos of the wings help ? What features do you try to see ?
Today, the Myopa was nearly at trhe same place. Weather very cold (4?C), and - 5?C during the night. The night after I found it, it began to snow (10cm) and yesterday the snow was still there.

For the Andrena clarkella, you are right, there are no exuvium within the abdomen.
An idea of what could happened to them ?
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Christine Devillers
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Posted on 06-03-2008 19:46
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wings 2
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#15 Print Post
Posted on 06-03-2008 19:48
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Andrena clarkella
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jorgemotalmeida
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Posted on 06-03-2008 19:59
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is it possible that exuvium fall in the ground?
 
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jhstuke
#17 Print Post
Posted on 06-03-2008 21:02
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It is realy M. tessellatipennis. At the attached picture you can see the differences between wings of the tesacea group (fig. 1) and the polystigma group (fig. 2). The wing of your fly belongs to the polystigma group and then it has to be tessellatipennis.

There has been just been published a revision of the tesacea group at Zootaxa where the identification is discussed in detail.

I would exspect the exuvium in the broken tip of the abdomen that cannot be seen at photo.

Jens-Hermann
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Zeegers
#18 Print Post
Posted on 06-03-2008 21:40
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Jens-Hermann, what about vicaria ?
Is it testacea group or polystigma group ?


Theo
 
Philippe moniotte
#19 Print Post
Posted on 07-03-2008 10:35
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Christine Devillers wrote:
I found this Myopa near nests of Andrena clarkella (3/3/2008, Spa, Belgium, bad weather very cold:8?C).
Size : 11 mm from head to end of the wings.
Could it be M.tessellatipennis?

They were three Andrena clarkella with a cut and empty abdomen. Could it be in relation with the Myopa?


Hello Christine
From my limited experience, this would be typical of predation by a Cicindelidae. Sounds early, but have you seen any yet this year in that neighbourhood ?

Philippe
 
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Christine Devillers
#20 Print Post
Posted on 07-03-2008 22:28
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Thanks Philippe,
I haven't yet see Cicindelidae, but I'll be careful.
 
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