Diptera.info :: Identification queries :: Diptera (adults)
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 Tabanus bovinus or Tabanus sudeticus?
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| Volker |
Posted on 27-06-2008 13:19
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Member Location: Bexbach/Germany Posts: 371 Joined: 15.05.08 |
Hello Is this Tabanus bovinus or Tabanus sudeticus? Founding in Bexbach/Saarland (Germany). Size of Fly was about 2,5 cm.    thx Volker Edited by Volker on 27-06-2008 19:49  |
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| Volker |
Posted on 16-07-2008 06:28
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Member Location: Bexbach/Germany Posts: 371 Joined: 15.05.08 |
Hello Can nobody help? thx Volker |
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| conopid |
Posted on 16-07-2008 10:26
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 Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
Hi, It may not be possible to separate T sudeticus from T bovinus in a photo. They are very difficult to separate and I wouldn't be able to say which it is, for certain, from the photo. Do you have the specimen? If so I can advise you what to look for - even then it's still difficult to make one's mind up! 
Nigel Jones, Shrewsbury, United Kingdom |
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| Volker |
Posted on 16-07-2008 11:02
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Member Location: Bexbach/Germany Posts: 371 Joined: 15.05.08 |
Hi conopid Thanks for the answer. I do not have the specimen, unfortunately. Regards Volker |
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| Tony T |
Posted on 16-07-2008 13:18
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 Member Location: New Brunswick, Canada Posts: 664 Joined: 08.02.07 |
Perhaps sudeticus? "The Horse Flies of Europe" separates males of these 2 spp. thus: Facets on upper part of eyes distinctly larger than those on the lower area (at least 3 to 4 times larger) . .sudeticus et al. All facets nearly equal in size, those on the upper area at most twice as large as facets on lower area .. bovinus et al. Incidentally, good idea not to catch lepidoptera with the same net you use to catch flies  |
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| Zeegers |
Posted on 16-07-2008 14:31
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Member Location: Soest, NL Posts: 18965 Joined: 21.07.04 |
Tony T. is completely right. It is a male, so easy, upper facets strongly enlarged, so sudeticus. Moreover, the abdominal pattern is very dark and the antennae is very reddish, but support sudeticus. Theo |
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| Volker |
Posted on 16-07-2008 14:37
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Member Location: Bexbach/Germany Posts: 371 Joined: 15.05.08 |
Hi Tony and Theo Many Thanks for your opinion. bye Volker |
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| conopid |
Posted on 16-07-2008 17:03
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Member Location: United Kingdom Posts: 1039 Joined: 02.07.04 |
The photo shows the eye facet sizes really well, which I had not noticed. I sometimes struggle to see this under the microscope because of the small depth of field. It's good to know that some things can be easier with a photo than by microsocope! 
Nigel Jones, Shrewsbury, United Kingdom |
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