Diptera.info :: Identification queries :: Diptera (adults)
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 small Sarcophagid, not Tachinid
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| Sundew |
Posted on 31-05-2010 19:36
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 Member Location: Berlin and Baden-Württemberg, Germany Posts: 3938 Joined: 28.07.07 |
Hi,, With the flowering of Compositae the season of the little grey-chequered visitors starts, and once more I am not sure whether Tachinid or Sarcophagid. As to "facial expression" I vote for the former... Can you help me? Many thanks, Sundew Sundew attached the following image:  [142.3Kb] Edited by Sundew on 31-05-2010 20:58 |
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| Sundew |
Posted on 31-05-2010 19:37
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3938 Joined: 28.07.07 |
More pics.
Sundew attached the following image:  [163.15Kb] |
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| Alexandru Pintilioaie |
Posted on 31-05-2010 19:42
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Member Location: Romania Posts: 1019 Joined: 04.02.10 |
I think is a Tachinid, but it's just an opinion... |
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| Stephane Lebrun |
Posted on 31-05-2010 19:47
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 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
The small three/four parafacial setulae are typical of Sarcophaginae.
Stephane. |
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| Alexandru Pintilioaie |
Posted on 31-05-2010 19:49
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Member Location: Romania Posts: 1019 Joined: 04.02.10 |
Thank for this informations Stephane ! |
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| ChrisR |
Posted on 31-05-2010 20:11
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 Super Administrator Location: Reading, England Posts: 7706 Joined: 12.07.04 |
Yeah - a small sarcophagid
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London. |
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| Sundew |
Posted on 31-05-2010 20:57
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3938 Joined: 28.07.07 |
Grrrr... The same confusion as in former years. And the little one had, to me, such a "tachinidish glance"! Now Stéphane pointed to small three/four parafacial setulae - where do I see them? I learned that the parafacial plate is between the ptilinal fissure and the eye, so did I tag the right hairs in the pics below? It would be good to know a character to discriminate between the two families. Do Tachinids not have these setulae, or in different number and/or position? Many thanks for further explanations, Sundew Sundew attached the following image:  [104.55Kb] |
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| Stephane Lebrun |
Posted on 31-05-2010 22:05
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Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
It is well pointed. I don't say that only Sarcophaginae have these setulae, Tachinidae can have some similar setulae (I think to Peleteria for example), Rhinophoridae too (like Stevenia) but in combination with some other characters(plumose arista and such a wing venation, i.e. M1+2 with appendix), it gives for more than 99% sure a Sarcophagidae(-nae). Not scientific at all, just a clue...
Stephane. |
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| Sundew |
Posted on 31-05-2010 22:21
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3938 Joined: 28.07.07 |
That was very helpful indeed! I also felt that the wing venation was more sarco than tachi, but my experience as to possible variability is still unsufficient. Now I'll look them all deeply into the face  !Thanks once more. |
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