Thread subject: Diptera.info :: Scatella sp.? -> S. lacustris

Posted by Carnifex on 05-08-2018 13:17
#1
Hi,

is this a Scatella found on a small stream in Vienna?

Next to another Ephydrid (--> Hydrellia) which will get a separate ID request

Cheers,
Lorin

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Edited by Carnifex on 25-10-2022 12:29

Posted by Tony Irwin on 05-08-2018 20:46
#2
Yes, this is Scatella lacustris (formerly known as tenuicosta)

Posted by Carnifex on 06-08-2018 08:59
#3
Thank you Tony,

then I would guess these are all the same species (found at the same spot within 30 min). I just read that the shape of spot 3 is diagnostic (which can't be seen on the upper specimen)

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Edited by Carnifex on 25-10-2022 12:30

Posted by Tony Irwin on 06-08-2018 12:54
#4
I would say that the upper one (perched on an algal mountain) is lacustris, but the last one is browner and appears to have quite strong bristles around the mouth-edge, which suggests it's probably S. stagnalis.