Thread subject: Diptera.info :: Tabanus bovinus or Tabanus sudeticus?
Posted by Volker on 27-06-2008 13:19
#1
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
Posted by Volker on 16-07-2008 06:28
#2
Hello
Can nobody help?
thx Volker
Posted by conopid on 16-07-2008 10:26
#3
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!:(
Posted by Volker on 16-07-2008 11:02
#4
Hi conopid
Thanks for the answer.
I do not have the specimen, unfortunately.
Regards Volker
Posted by Tony T on 16-07-2008 13:18
#5
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:D
Posted by Zeegers on 16-07-2008 14:31
#6
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
Posted by Volker on 16-07-2008 14:37
#7
Hi Tony and Theo
Many Thanks for your opinion.
bye Volker
Posted by conopid on 16-07-2008 17:03
#8
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! ;)