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Dioctria ID -> Dioctria hyalipennis
#1 Print Post
Posted on 10-01-2018 18:52

Location: Gothenburg, Sweden
Posts: 436
Joined: 27.10.14

From southern Sweden in june
I think this is either D rufipes or hyalipennis, but I don't know how to separate them..
Is it possible on this pic?

maroo attached the following image:

Edited by maroo on 17-01-2018 21:16
#2 Print Post
Posted on 11-01-2018 21:20
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Location: Tilburg Netherlands
Posts: 1849
Joined: 18.05.10

This is D. hyalipennis. D. hyalipennis has a small extra stripe of silvery tomentum just above the middle coxae, visible in your picture. The antennal tubercle is much larger in rufipes and it has longer antennae, is more robust and bigger. D. rufipes never has black markings on front and middle femora, hyalipennis is very variable in that respect. D. rufipes has little tomentum on the mesonotum, hyalipennis more although thinly and vaguely defined. D hyalipennis prefers shrubs and trees, rufipes prefers herbs.


Field guide to the robber flies of the Netherlands and Belgium:
Mariastraat 12
#3 Print Post
Posted on 12-01-2018 12:01

Location: Gothenburg, Sweden
Posts: 436
Joined: 27.10.14

Thank you Reinoud for your informative answer! :-)
Hopefully I will be able to ID these ones by myself from now on!

Martin Oomen
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Date and time
26 March 2019 03:42


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06.03.19 07:19
@ Elisabeth: you must go to the Forum --> Diptera (adults) --> New thread

05.03.19 13:09
Hello, I am new to diptera. How can I submit a photo of a diptera to find the correct name? I tried 'submit gallery photo but that was refused. Elizabeth

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I looooove the fly in the beer irish joke in the random quotes Grin

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Thank you. Yes - I've done it now. The file was too large.

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no blanks in filename, file size reduced (below 300 k or so).Did you fulfill these criteria ?

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