Diptera.info

Posted by Juergen Peters on 06-08-2019 20:12

Hello,

this 8 mm male visited the UV light (northwest Germany). Polietes sp.?

Edited by Juergen Peters on 07-08-2019 18:02

Posted by johnes81 on 07-08-2019 11:58

this is a strange one. bluish abdomen throws me off. However, i don't think it is Polietes. Polietes have a rounder abdomen. I always think of Polietes as a Calliphora collided with a Muscina. Plus, i think that Polietes generally have stronger bristles on the side of the thorax.

I see a strong pd on t3 but i don't know of any dark Phaonia with a bluish dusting. Perhaps it is Hydrotaea? I also don't know of any bluish Thricops.

I say wait for an opinion from Nikita.

Posted by tristram on 07-08-2019 13:16

The slightly convergent veins near the wing-tip suggest Hydrotae to me, eg: https://diptera.i...to_id=4086

They are not convergent enough for Muscina levida: https://diptera.i...to_id=5738

Posted by johnes81 on 07-08-2019 14:03

Hello Tristram, i also think Hydrotaea but i'm not sure. I don't have much experience with them. I only have H. cyrtoneurina and i forget what it looks like. LOL. I have to revisit this genus to learn more about them. I don't find them very often for some reason.

Anyway, that is two votes for Hydrotaea. Mine a question and Tristram's a positive.

Good place to start, Jürgen. Hydrotaea sp.

Thank you for posting, Tristram :)

Posted by Juergen Peters on 07-08-2019 18:02

Thanks a lot for your comments, John and Tristram!

P.S.: I think the bluish colour may be a photographic artifact.