Thread subject: Diptera.info :: Tachinidae: are these 2 the same?
#1
I just wonder if it's the same species despite one's got hairy eyes and the other has no hairs.
No. 1 - June 05, at my balcony.
No. 2 - June 07, on a forest meadow (same place as my June 03 posts).
Size roughly equal, around 7.5 mm.
First, the heads.
#2
I'd say they are different. Colour is different (may not necessarily be a decider) but the structure of the second antennal segment is different (narrower and rather glossy in 1) and the location where the ocellar setae are implanted is different, too. Otherwise there are other idfferences in the facial and frontal setae and setulae.
#5
Many thanks Paul - well to my untrained eye the form and location of setae are very similar; unfortunately, I don't have two head shots with identical position so maybe different angles are deceptive...
Posted by
ChrisR on 08-06-2007 12:19
#6
They look like different genera to me but I think they are the same tribe (Voriini) because they have the steeply angled m-cu vein. The bare eyed one looks like
Athrycia and the hairy-eyed one could be
Cyrtophleba ruricola.
#7
Thanks Chris - actually it was wing venation that attracted my attention first - and I can only guess how many Tachinidae species look so much alike if even different genera are so similar
...
Posted by
ChrisR on 08-06-2007 13:25
#8
Well, I am pretty sure that the angled m-cu is found only in Voriini and here using the UK key your specimens would go the ways I described. The hairs along the vein r4+5 are also quite distinctive. But there are more Voriini in Europe that I don't know about
Posted by
Zeegers on 08-06-2007 18:59
#9
Chris is very correct.
Cyrtophleba ruricola and Athrycia. I guess it is A. trepida.
Theo
#10
Many thanks for your confirmation Theo.