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View Thread :: Identification queries :: Diptera (adults)
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Prosena ?
Eric Steckx
#1 Print Post
Posted on 17-12-2005 10:55
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Location: Belgium
Posts: 271
Joined: 15.09.05

Is this fly Prosena siberita (Fabricius) ?
Thx for your help
?ric Steckx
#2 Print Post
Posted on 17-12-2005 21:40

Location: Soest, NL
Posts: 17941
Joined: 21.07.04

No, but close.

The topcel has a longer petiole, which suggests Estheria in Dexiinae - Dexiini, as is Prosena.
Prosena is easily recognized by the very long proboscis, that is, if you can have a look at the head !

Eric Steckx
#3 Print Post
Posted on 22-12-2005 20:27
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Location: Belgium
Posts: 271
Joined: 15.09.05

Thanks Theo
Is it possible to identify the species ?
I tried with your key but had a problem with the colour of the scutellum :
it isn't completely red but not so dark, ...
What's your opinion ?

NB: Sorry for the private message but I confused PM=Private Message with Post Message. Sad

#4 Print Post
Posted on 23-12-2005 11:56

Location: Soest, NL
Posts: 17941
Joined: 21.07.04

Hi Eric,

Under the assumption that the picture is taken in Central Europe (Belgium ?), the species is definitely Estheria cristata. Scutellum largely orange and dc 3+3 (though difficult to see).
But, if it is taken in the Mediterrean, I cannot be sure.


Eric Steckx
#5 Print Post
Posted on 24-12-2005 12:14
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Location: Belgium
Posts: 271
Joined: 15.09.05

Hi Theo

Yes, the pictures have been taken in Belgium.
Thank you, Merry Xmas & Happy New Year

#6 Print Post
Posted on 25-12-2005 17:00

Location: Soest, NL
Posts: 17941
Joined: 21.07.04

Hi Eric,

Do you have more information ?
Estheria cristata has become extinct in The Netherlands somewhere around 1920 (!), so its occurence in Belgium is of interest

Eric Steckx
#7 Print Post
Posted on 27-12-2005 13:59
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Location: Belgium
Posts: 271
Joined: 15.09.05

Hi Theo,
I took this picture 23/7/2005 in the locality of Remouchamps, at the extreme east of the calcareous zone (excuse my bad english !). The fly was eating on flowers of Heracleum sphondylium in a path between a wet meadow (whith horses) and forest. Is this type of information you are waiting ? If not, what precision would be useful ? UTM coordinates ? Other plants or insects in the same place ? ...
Thanks for your interest in my observation.
#8 Print Post
Posted on 27-12-2005 15:19

Location: Soest, NL
Posts: 17941
Joined: 21.07.04

Hi Eric,

Thank you.
That was the kind of information I meant.

Great find !

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