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 Tabanus bovinus - was: unknown Tabanidae (Tabanus sp.)?
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| Marc T |
Posted on 13-06-2020 20:57
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 Member Location: Posts: 248 Joined: 30.08.11 |
Hello from the North of Germany, where I caught a couple of fotos today in the Lüneburger Heide, showing a Spotted Flycatcher, Muscicapa striata, feeding on a tabanid fly. It was quite a large fly, but obviously not big enough, a few minutes later, the bird came with another one ... Thanks for helping with ID, Marc Germany, Lüneburger Heide, Otter - Groß Todtshorn, 13.06.2020 (Foto: Marc T.) Edited by Marc T on 27-06-2020 20:54 |
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| Marc T |
Posted on 13-06-2020 21:02
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Member Location: Posts: 248 Joined: 30.08.11 |
Detail 1 |
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| Marc T |
Posted on 13-06-2020 21:03
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Member Location: Posts: 248 Joined: 30.08.11 |
Detail 2 |
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| Zeegers |
Posted on 22-06-2020 20:26
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Member Location: Posts: 18446 Joined: 21.07.04 |
It looks like Tabanus bovinus, but it probably is T. sudeticus with antenna that appear black (?) Theo |
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| Marc T |
Posted on 26-06-2020 13:04
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Member Location: Posts: 248 Joined: 30.08.11 |
Hi Theo, thanks for your help! I've just checked the German "Wikipedia", where T. bovinus is reported having - in contrast to T. sudeticus - green eyes. But I'm not sure, if this source is reliable!? Unfortunately I don't have pic, where the antenna is fully visible, that's what you asked for, right? BR, Marc |
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| Zeegers |
Posted on 27-06-2020 08:43
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Member Location: Posts: 18446 Joined: 21.07.04 |
Yes, the eye colouration is valid, but very subtle. All features indicate bovinus, with the exception of the - apparent - strong dorsal tooth on third antennal segment. And bovinus is probably extremely rare in the nirth of Germany, so I’d like to be dead sure. Theo |
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| Zeegers |
Posted on 27-06-2020 15:07
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Member Location: Posts: 18446 Joined: 21.07.04 |
Ah !! I noticed the dorsal tooth is even much too strong for sudeticus. So I took a very close look: the supposed dorsal tooth is actually the tip of front tarsus out of focus ! There is no drosal tooth. That settles it: Tabanus bovinus it is. Please do educate your birds to find other snacks ! Theo |
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| Marc T |
Posted on 27-06-2020 20:50
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Member Location: Posts: 248 Joined: 30.08.11 |
Hi Theo, excellent - thanks for your help! I was just searching for another pic, showing the antenna - I found one, maybe slightly different/better(?) view - but you nailed it anyway. Sorry to say, these guys seem to love Tabanus sp., not sure, if it was again T. bovinus or T. sudeticus in the second case  .Today i saw another nest of the same bird species close the first one, adults carrying large Tabanus sp. for their youngs (at least four of them in the nest), but I haven't taken any pics. But I'll try to convince them, looking for other preys, promised - all the best, Marc Edited by Marc T on 27-06-2020 21:16 |
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| Marc T |
Posted on 27-06-2020 20:53
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Member Location: Posts: 248 Joined: 30.08.11 |
2nd prey, same location, same date, approx. 1/2 hour later - sorry, no pics available, showing more of the fly... |
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| Zeegers |
Posted on 28-06-2020 07:44
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Member Location: Posts: 18446 Joined: 21.07.04 |
Amazing. The second one is a male. Theo |
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but don't see the image in the post.
