Diptera.info

Posted by Sundew on 12-06-2014 18:14

Hi,
Some days ago I was in a wood in southern Brandenburg, where I saw this medium-sized fly that looked muscid-ish but had a petiole untypical for that family. The rounded head made me think of Rhinophoridae; however, the calypters are quite big. So a Tachinid is left - and I do not know which... Help is appreciated!
Thanks, Sundew

Posted by Sundew on 23-06-2014 00:09

Hmmm - I had a E. bohemani once (http://www.dipter...pid=140513) and it had a very conspicuous, quite dark, wing venation... The fly under concern has a much less "visible" wing venation independent of light and camera angle. Then, in Tschorsnig & Herting 1994 I read that in Estheria the dorsal excavation of tergite 2 reaches the margin. This seems not to be the case in my fly. Can you please inform me a bit more in detail why this is an Estheria for sure - does the petiolate venation beat the other characters? I add one more picture. Thanks!

Edited by Sundew on 23-06-2014 00:10

Posted by Zeegers on 23-06-2014 18:10

The head profile and long legs indicate Dexiini. Of course, you always have to rethink about Microphthalmini, ibut it it clearly neither Microphthalma nor Dexiosoma. The wing venation with such a long stalk leads in Europe then directly to Estheria. The bare parafacial, dark scutellum, long stalk and 4 DC all indicate Estheria bohemani.

I just checked my collection: all my bohemani are at least somewhat yellowish.
I agree that this one seems to be a bit more yellowish. Maybe the light, maybe variation.

I have no doubt this is bohemani, are we sure about the other one ?

Theo

Posted by Sundew on 23-06-2014 18:22

Yep - it is the same individual :). So the excavation of tergite 2 is deep enough? To me, it does not reach the hind margin...