Diptera.info

Posted by Juergen Peters on 23-01-2012 20:08

Hello!

This 4 mm Sapromyza (?) landed on my hand in the night at light in garden (northwest Germany).

Edited by Juergen Peters on 24-01-2012 21:20

Posted by Paul Beuk on 23-01-2012 20:26

Looks like Tricholauxania praeusta

Posted by Juergen Peters on 23-01-2012 21:02

Hello, Paul!

Paul Beuk wrote:
Looks like Tricholauxania praeusta

Thank you! I did not think that Tricholauxania also could have those spots on the abdomen...

Posted by Mark-uk on 24-01-2012 17:46

I am not convinced either, as markings on dm-cu crossvien, and tips of the wings are not visable.

Supect thid is Sapromyza sp?

Posted by Paul Beuk on 24-01-2012 19:42

The radial vein appears to have ventral setulae, though...

Posted by Mark-uk on 24-01-2012 19:57

I can't tell either way, I'm impressed you cant see this detail from these photos

Posted by rvanderweele on 24-01-2012 20:03

#10

Weird, Paul, but indeed especially on the second picture, but T. praeusta has no markings on the abdomen for sure. And if I look at the head I think I can see only 1 orbital bristle: S. albiceps....?

Posted by rvanderweele on 24-01-2012 21:00

#12

OMG, if my wife reacts like that I am in big shit!

Do you agree, Paul, or not? I think your opinion is important, since you also know the Lauxaniidae well!

Posted by blowave on 24-01-2012 21:01

#13

Why not Sapromyza (Sapromyza) sexpunctata ?

http://www.dipter...p;chars=50

Posted by rvanderweele on 24-01-2012 21:03

#14

only 1 orbital is very typical for S. albiceps

Posted by blowave on 24-01-2012 21:07

#15

Can you be sure there's only one orbital Ruud? Does S. albiceps have 6 spots? I can see this has in an extra spot showing in the first photo.

Posted by blowave on 24-01-2012 21:10

#16

The photo of S. albiceps in the gallery doesn't look to have any spots..

http://www.dipter...to_id=1636

Besides, Juergen always has the same flies I have!

Posted by rvanderweele on 24-01-2012 21:14

#17

On the photo's I can see clearly only 1 orbitle. I can send you a photo of the drawing in the key of Laci Papp. Then it is quite easily seen. Do you see 6 spots? I see only 2 pair. Czerny mentions BTW only one pair of spots, Laci, for females, 2 pairs. I don't know why he separately mentions the females.

Posted by Juergen Peters on 24-01-2012 21:19

#18

Hello, all!

Thank you! Interesting discussion

. May I conclude that the majority of votes are for Sapromyza albiceps now?

Posted by rvanderweele on 24-01-2012 21:25

#19

I am democratic, but it is not a democratic decision. It belongs to S. albiceps or to c.f. albiceps or not at all. Problem with this kind of flies is that it is always much easier to have them under the microscope.

Posted by blowave on 24-01-2012 21:27

#20

I lost my SQL SERVER!

Yes you are correct Ruud, I lightened the photo and there is one orbital, the 'spot' turns out to be a black bristle.

Edited by blowave on 24-01-2012 21:28