Diptera.info

Posted by cyprinoid on 05-05-2011 21:13

Norway, 04.05.11, 6-7 mm, if I am not mistaken the fly was blueish in natural light

I have run this fly through the keys a couple of times and keep ending up at Oswaldia, so I hope I am right on that.

If so, then... here's my problem now:

-2 presutural dc on one side, on the other side there is a smaller bristle (not hair) between them.
(It is a little unsymmetrical in other features as well.)
-hanging bristles above vibrissa, not 'reaching upwards to almost half'
-3 pairs of presutural acr, the most posterior pair weaker.. but again, not just hairs

confusing.. am I in the wrong genus?

Edit: Live specimen: http://www.flickr...98/sizes/l

Edited by cyprinoid on 06-05-2011 11:40

Posted by cyprinoid on 05-05-2011 21:15

dorsal

Posted by cyprinoid on 05-05-2011 21:16

acr /dc

Posted by ChrisR on 05-05-2011 22:49

I see very few of these and have always found them to be quite nondescript so I'll pass ... but if it is a male they have quite distinctive genitalia with a surface like black velvet :)

Posted by cyprinoid on 06-05-2011 11:30

Thanks anyway Chris, hopefully Theo will take it.

Edited by cyprinoid on 06-05-2011 11:41

Posted by Jaakko on 12-05-2011 21:10

Looks ok to me. A rather common species in the north.

Posted by cyprinoid on 12-05-2011 21:41

Thank you Jaakko!