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Diptera.info :: Identification queries :: Diptera (adults)
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Small Tachinid for ID, C Spain
Piluca_Alvarez
#1 Print Post
Posted on 26-11-2011 20:03
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Location: Madrid, Spain
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Taken in the outskirts of Madrid on the 22nd April 2011. I guess it is Phasiinae, but don't know which genus it belongs to. Thanks in advance for any help!

And sorry for the quality. Too small for a compact camera Sad
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Piluca_Alvarez
#2 Print Post
Posted on 26-11-2011 20:03
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Another view.
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Piluca_Alvarez
#3 Print Post
Posted on 26-11-2011 20:04
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And another view.
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Zeegers
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Posted on 27-11-2011 10:37
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Looks like a Dufouria, which is very Phasiinae-like, but actually Dexiinae (you need to check the male genitalia to understand why !)


Theo
 
ChrisR
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Posted on 27-11-2011 15:52
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I'd agree with Dufouria - the long, sloping parafrontal/frons is quite distinctive Smile Should have 3 pairs of scutellar marginals.
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London.
 
http://tachinidae.org.uk
Piluca_Alvarez
#6 Print Post
Posted on 27-11-2011 20:17
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Thank you sooo much once more, Theo and Chris!! No wonders I couldn't find it in Phasiinae but I would have never guessed it was Dexiinae! Shock Learning, learning... Wink

Well, at least I see it is Dufouria clearly now TumbsUp and as usual I had to check if I could go a bit further in ID Smile Only two species in Spain: chalybeata and nigrita. With so poor quality pictures not many chances but went through the keys and this enterely looks like nigrita Cool

Probably not a possitive ID, but look at the bristles of the legs in this picture:
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Piluca_Alvarez
#7 Print Post
Posted on 27-11-2011 20:18
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And look at the costal spines in this other one:
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ChrisR
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Posted on 27-11-2011 20:31
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2 ad on the mid-tibia would suggest nigrita ... was it quite small?
Edited by ChrisR on 27-11-2011 20:32
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London.
 
http://tachinidae.org.uk
Piluca_Alvarez
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Posted on 27-11-2011 20:36
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Yes, very small. In fact I was convinced it was a tiny Phasia (perhaps pusilla) when I took the pictures. The surprise came when I processed the pictures many months later. Venation was wrong as was the hairy abdomen.

Any difference in size between those two species?

The costal spines are clearly shorter than m-r too TumbsUp
Edited by Piluca_Alvarez on 27-11-2011 20:37
 
ChrisR
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Posted on 27-11-2011 21:07
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In my experience D.nigrita is the smaller species ... about 5mm. Smile
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London.
 
http://tachinidae.org.uk
Piluca_Alvarez
#11 Print Post
Posted on 27-11-2011 22:23
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I would say it was closer to 8 mm. Difficult to say as it was months ago.

For you to have an idea, this is a picture of the Dufouria on a normal field daisy.
Piluca_Alvarez attached the following image:


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