Diptera.info :: Identification queries :: Diptera (adults)
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 back :) Tabanidae family?
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| jorgemotalmeida |
Posted on 05-08-2006 20:11
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 Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
Hi I took this photo on 26th July 2006 in Valle de los Caidos, near Madrid - SPAIN. Above a car. Tabanidae family?  To see it larger go: http://www.flickr...387&size=l |
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| Tony Irwin |
Posted on 05-08-2006 22:41
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 Member Location: Norwich, England Posts: 7306 Joined: 19.11.04 |
I'd say Tabanus female, but not sure which species. 
Tony ---------- Tony Irwin |
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| Zeegers |
Posted on 06-08-2006 11:45
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Member Location: Soest, NL Posts: 19143 Joined: 21.07.04 |
I agree Tabanus with 3 eye-bands are not that common. T. nemoralis and T. glaucopis come in mind, given the locality. However, I would need to see the fly in front view to be more sure. Theo Zeegers |
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| jorgemotalmeida |
Posted on 06-08-2006 13:26
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
Zeegers wrote: I agree Tabanus with 3 eye-bands are not that common. T. nemoralis and T. glaucopis come in mind, given the locality. However, I would need to see the fly in front view to be more sure. Theo Zeegers Here you can see another photo. I hope this helps!  to see it larger go: http://www.flickr...418&size=o |
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| Zeegers |
Posted on 06-08-2006 17:57
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Member Location: Soest, NL Posts: 19143 Joined: 21.07.04 |
Oke, this helps. It is Tabanus glaucopis, one of the possibilities mentioned. Thanks Theo |
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| jorgemotalmeida |
Posted on 06-08-2006 21:11
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
Zeegers wrote: Oke, this helps. It is Tabanus glaucopis, one of the possibilities mentioned. Thanks Theo please tell me how can you reached to T. glaucopis? What charateristics enables us to tell which species belongs? thank you. |
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| Zeegers |
Posted on 07-08-2006 11:04
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Member Location: Soest, NL Posts: 19143 Joined: 21.07.04 |
OK. The stripe between the eyes, in frontal view, is called the frontal stripe. There are dark markings on this stripe. Usually one below, the lower callus, and one in the middle, the upper callus. In this case, you can see that the upper callus is broad (not linear) and separated from the lower callus. Then, the most crucial feature: below the frontal stripe, just above the antennal base, their is a more or less triangular area called the subcallus. In most Tabanidae, this subcallus is greyish dusted. However, in T. glaucopis is is shining black. It is difficult to see in your picture, but have a look at the one by Gerard Pennards in the gallery and you'll see what I mean. This, and the 3 stripes on the eye will lead to T. glaucopis. Theo |
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| jorgemotalmeida |
Posted on 07-08-2006 17:42
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
Zeegers wrote: OK. The stripe between the eyes, in frontal view, is called the frontal stripe. There are dark markings on this stripe. Usually one below, the lower callus, and one in the middle, the upper callus. In this case, you can see that the upper callus is broad (not linear) and separated from the lower callus. Then, the most crucial feature: below the frontal stripe, just above the antennal base, their is a more or less triangular area called the subcallus. In most Tabanidae, this subcallus is greyish dusted. However, in T. glaucopis is is shining black. It is difficult to see in your picture, but have a look at the one by Gerard Pennards in the gallery and you'll see what I mean. This, and the 3 stripes on the eye will lead to T. glaucopis. Theo Thank you a lot for the great lesson!  I understand all the information. In next time, I will try to apply this info. |
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