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View Thread :: Identification queries :: Diptera (adults)
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Ulidiidae? => Opomyzidae, Group Geomyza annae, G. balachowskyi, G. hackmani, G. martineki
Siegfried Rudolf
#1 Print Post
Posted on 29-08-2023 21:58

Location: D / Staufen im Breisgau
Posts: 275
Joined: 23.03.21

Hello everyone,

I photographed this little fly today in southwest Germany on the bank of a stream. Is it possible to determine it? I estimate the size at 3 to 4 mm.

Greetings Siggi
Siegfried Rudolf attached the following image:

Edited by Siegfried Rudolf on 09-09-2023 08:36
Siegfried Rudolf
#2 Print Post
Posted on 29-08-2023 21:58

Location: D / Staufen im Breisgau
Posts: 275
Joined: 23.03.21

pic. 2
Siegfried Rudolf attached the following image:

#3 Print Post
Posted on 29-08-2023 22:00

Location: Poland
Posts: 2323
Joined: 05.01.06

Opomyzidae, genus Geomyza
dr. A. J. Woznica, Institute of Environmental Biology, Wroclaw University of Environmental & Life Sciences
Siegfried Rudolf
#4 Print Post
Posted on 29-08-2023 22:05

Location: D / Staufen im Breisgau
Posts: 275
Joined: 23.03.21

Embarrassing, I haven't even found the right family yet...

Thank you very much Andrzej
Jan Willem
#5 Print Post
Posted on 31-08-2023 09:05
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Location: Waalwijk, The Netherlands
Posts: 2122
Joined: 24.07.04

Difficult to be sure which species you are dealing with. It belongs to the group including Geomyza annae/G. balachowskyi/G. hackmani/G. martineki. The dark subscutellum would indicate this is not G. balachowskyi. Wing is a bit wider in G. martineki, compared to the other species, but that's difficult to properly judge. Did you collect the specimen?
Jan Willem van Zuijlen
Siegfried Rudolf
#6 Print Post
Posted on 09-09-2023 08:29

Location: D / Staufen im Breisgau
Posts: 275
Joined: 23.03.21

Hello Jan,

please excuse my late answer. Thank you for the additional information. They are very interesting to me. I didn't collect the animal. I just take photos.

Greetings Siggi
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26 February 2024 12:58


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17.08.23 15:23

17.08.23 13:54
Tony, I HAD a blank in the file name. Sorry!

17.08.23 13:44
Tony, thanks! I tried it (see "Cylindromyia" Wink but don't see the image in the post.

17.08.23 11:37
pjt - just send the post and attached image. Do not preview thread, as this will lose the link to the image,

16.08.23 08:37
Tried to attach an image to a forum post. jpg, 32kB, 72dpi, no blanks, ... File name is correctly displayed, but when I click "Preview Thread" it just vanishes. Help!

23.02.23 21:29
Has anyone used the Leica DM500, any comments.

27.12.22 21:10
Thanks, Jan Willem! Much appreciated. Grin

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Thanks Paul for your work on keeping this forum available! Just made a donation via PayPal.

09.10.22 17:07
Yes, dipterologists from far abroad, please buy your copy at veldshop. Stamps will be expensive, but he, the book is unreasonably cheap Smile

07.10.22 11:55
Can any1 help out with a pdf copy of 1941 Hammer. Vidensk. Meddel. Dansk Naturhist. Foren. 105; thank you

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