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View Thread :: Identification queries :: Diptera (adults)
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Ephydridae - Scatella tenuicosta?
#1 Print Post
Posted on 02-07-2020 03:30
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Location: Berlin, Germany
Posts: 3513
Joined: 28.07.07

Some weeks ago lots of tiny Ephydrids were busy in a well-wetted flower pot on my balcony. When the soil dried out, they vanished. The shape of the white spot closest to the wing tip make me think of Scatella tenuicosta. Do you agree? - Location is southwestern Germany, 20 km west of Stuttgart.
Thanks, Sundew
Sundew attached the following image:

Tony Irwin
#2 Print Post
Posted on 02-07-2020 09:36
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Location: Norwich, England
Posts: 6080
Joined: 19.11.04

Yes, S.tenuicosta (now known as Scatella lacustris).
Tony Irwin
#3 Print Post
Posted on 02-07-2020 14:53
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Location: Berlin, Germany
Posts: 3513
Joined: 28.07.07

Thanks for confirmation! However, the synonymy puzzles me... According to your paper of 2018 (I was not able to find a PDF version online), you see S. stagnalis as a separate species, but GBIF (, who cites your paper in detail, states that S. lacustris is a synonym of S. stagnalis.
What is right?
Tony Irwin
#4 Print Post
Posted on 02-07-2020 15:33
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Location: Norwich, England
Posts: 6080
Joined: 19.11.04

In the GBIF link you gave, the left-hand panel does give lacustris as a synonym of stagnalis. This is incorrect. S.stagnalis is a good species, and separate from lacustris (=tenuicosta). I'll PM you about a pdf of the paper.
Tony Irwin
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03 August 2020 11:22


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02.08.20 10:10
Ok... lower case naming for images.. understood,Lothar

02.08.20 10:02
I uploadad a jpg, but it is not visible in the thread...Lothar

30.07.20 21:32
Have you checked the FAQ already?

30.07.20 02:23
cannot upload photos, it says wrong name. can someone please explain the exact procedure and the does and donts?

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Don't use the preview, post directly.

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Hi, apologies but also can't get photos to load. They are jpg, <300K, no spaces in names. Help? Smile

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Hi Anders. No blanks in filename permitted

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Hi I seem to have problem posting photos in the forum. Any idea what I'm doing wrong. File size around 200 kB. File extension lower case (.jpg).?

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