Thread subject: Diptera.info :: small Sarcophagid, not Tachinid
Posted by Sundew on 31-05-2010 19:36
#1
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
Edited by Sundew on 31-05-2010 20:58
Posted by Sundew on 31-05-2010 19:37
#2
More pics.
Posted by Alexandru Pintilioaie on 31-05-2010 19:42
#3
I think is a Tachinid, but it's just an opinion...:)
Posted by Stephane Lebrun on 31-05-2010 19:47
#4
The small three/four parafacial setulae are typical of Sarcophaginae.
Posted by Alexandru Pintilioaie on 31-05-2010 19:49
#5
Thank for this informations Stephane !
Posted by ChrisR on 31-05-2010 20:11
#6
Yeah - a small sarcophagid :)
Posted by Sundew on 31-05-2010 20:57
#7
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
Posted by Stephane Lebrun on 31-05-2010 22:05
#8
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...
Posted by Sundew on 31-05-2010 22:21
#9
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 :D!
Thanks once more.