Thread subject: Diptera.info :: Gonia ornata - or perhaps distinguenda?

Posted by Walther Gritsch on 03-06-2010 13:28
#1

Hi

Under normal circumstances I would be perfectly happy if this one was Gonia ornata but the more I look at it the more I doubt it.
What I'm driving at is of course Gonia distinguenda.
The hairs on the abdomen are adpressed and the postoculars are thick and straight. Both are different in ornata. In the matter of the postoculars the Central european key has for ornata: Postokularzilien fein, die oberen mit ihrer Spitze nach vorn gebogen. And for distinguenda: Postokularzilien beim Männchen stark, kaum gebogen.
Therefore I'm tending towards distinguenda. I should add that I've never seen ornata in the flesh so I have nothing to compare with.

What do you think? Ornata after all or the much rarer distinguenda?

The rather worn male specimen was swept from grass on 2. vi 2010 near the coast on the island Amager (NEZ/DK).

Three pictures!

Regards,