Thread subject: Diptera.info :: Small Tachinid for ID, C Spain
Posted by Piluca_Alvarez on 26-11-2011 20:03
#1
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 :(
Posted by Piluca_Alvarez on 26-11-2011 20:03
#2
Another view.
Posted by Piluca_Alvarez on 26-11-2011 20:04
#3
And another view.
Posted by Zeegers on 27-11-2011 10:37
#4
Looks like a Dufouria, which is very Phasiinae-like, but actually Dexiinae (you need to check the male genitalia to understand why !)
Theo
Posted by ChrisR on 27-11-2011 15:52
#5
I'd agree with
Dufouria - the long, sloping parafrontal/frons is quite distinctive :) Should have 3 pairs of scutellar marginals.
Posted by Piluca_Alvarez on 27-11-2011 20:17
#6
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! :o Learning, learning... ;)
Well, at least I see it is Dufouria clearly now |t and as usual I had to check if I could go a bit further in ID :) 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 B)
Probably not a possitive ID, but look at the bristles of the legs in this picture:
Posted by Piluca_Alvarez on 27-11-2011 20:18
#7
And look at the costal spines in this other one:
Posted by ChrisR on 27-11-2011 20:31
#8
2 ad on the mid-tibia would suggest
nigrita ... was it quite small?
Edited by ChrisR on 27-11-2011 20:32
Posted by Piluca_Alvarez on 27-11-2011 20:36
#9
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 |t
Edited by Piluca_Alvarez on 27-11-2011 20:37
Posted by ChrisR on 27-11-2011 21:07
#10
In my experience
D.nigrita is the smaller species ... about 5mm. :)
Posted by Piluca_Alvarez on 27-11-2011 22:23
#11
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.