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Diptera.info :: Identification queries :: Diptera (adults)
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Structures in Tipula abdomen
John Bratton
#1 Print Post
Posted on 15-10-2022 19:01
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Location: Menai Bridge, North Wales, UK
Posts: 638
Joined: 17.10.06

The fly is Tipula confusa, caught 7 October 2022 at Moelyci Farm, Tregarth, North Wales. It was quite lively when I caught it, but under the microscope I saw the tip of the abdomen was missing. In the cavity were some black spheres attached by thin strands - photo. I'm wondering if these are fungi and would they be the cause of the Tipula losing its abdomen tip?
John Bratton attached the following image:


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Tony Irwin
#2 Print Post
Posted on 16-10-2022 11:40
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Location: Norwich, England
Posts: 7187
Joined: 19.11.04

I would say these black spheres are spermathecae - the structures in which the female stores sperm before fertilization of the eggs. Quite why the fly should be missing its abdomen tip, I don't know.
Tony
----------
Tony Irwin
 
John Bratton
#3 Print Post
Posted on 16-10-2022 16:07
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Location: Menai Bridge, North Wales, UK
Posts: 638
Joined: 17.10.06

Thanks very much for the explanation.
John
 
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Tony, I HAD a blank in the file name. Sorry!

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Tony, thanks! I tried it (see "Cylindromyia" Wink but don't see the image in the post.

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pjt - just send the post and attached image. Do not preview thread, as this will lose the link to the image,

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