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Diptera.info :: Identification queries :: Diptera (adults)
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Sphaerocerid at river side -> Pseudocollinella cf. humida
Carnifex
#1 Print Post
Posted on 27-11-2021 12:53
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Location: Vienna, Austria
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At a stream in Allgäu/Bavaria early September.
Initially thought of Ephydridae, but the antenna suggests otherwise. Don't see enlarged hind tarsi, however

inaturalist-open-data.s3.amazonaws.com/photos/170338331/large.jpeg
inaturalist-open-data.s3.amazonaws.com/photos/170338318/large.jpeg
inaturalist-open-data.s3.amazonaws.com/photos/170338318/large.jpeg
Edited by Carnifex on 27-11-2021 18:04
Cheers, Lorin

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All requests are from the urban area of Vienna, if not otherwise stated.

My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated.
 
Tony Irwin
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Posted on 27-11-2021 13:07
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It is Sphaeroceridae, and those that look like ephydrids and live by a stream often turn out to be Pseudocollinella, but let's wait for the experts!
Edited by Tony Irwin on 27-11-2021 13:08
Tony
----------
Tony Irwin
 
Carnifex
#3 Print Post
Posted on 27-11-2021 13:31
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Thanks Tony! If so, then two species would be possible according to FE:
P. septentrionalis or P. humida
Cheers, Lorin

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All requests are from the urban area of Vienna, if not otherwise stated.

My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated.
 
daveb21
#4 Print Post
Posted on 27-11-2021 17:36
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Location: Norfolk UK
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Looks like P. humida there is also P. jorlii which seems (just from personal records) to be more inclined to be found in sandier areas and also appears paler with more yellow around leg joints and coxa. The defining difference between the two is that P. jorlii has a shorted distal postero-dorsal bristle which unfortunately isn't visible here.
 
Carnifex
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Posted on 27-11-2021 18:05
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Thanks for the input. Apparently, P jorlii is extending its range north, so it might be worth to have a closer look at those specimen.

Where should the bristle be located - on a leg?
Cheers, Lorin

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All requests are from the urban area of Vienna, if not otherwise stated.

My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated.
 
daveb21
#6 Print Post
Posted on 27-11-2021 18:22
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Location: Norfolk UK
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on tibia 2, the bristle is almost opposite the antero-dorsal towards the tip of the tibia, in humida they are of equal length, in jorlii the postero-dorsal is around half the length of the antero-dorsal. Carles Tolra and Paul Gatt have papers describing jorlii - I've emailed youSmile
Edited by daveb21 on 27-11-2021 18:24
 
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