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Diptera.info :: Identification queries :: Diptera (adults)
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Tabanus lineola 2016-IX-9
John Carr
#1 Print Post
Posted on 10-09-2016 02:13
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Location: Massachusetts, USA
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I think this is Tabanus lineola Fabricius. There are other, similar species and I have not read all the literature.

Massachusetts, USA September 9, 2016. Near slow-moving fresh water, about 5 km from salt water.
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John Carr
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Posted on 10-09-2016 02:14
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Dorsal
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Zeegers
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Posted on 10-09-2016 08:01
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Hi John

I have the literature, but it is a very tricky group. I will look into it.
No frontal shot ? Do you happen to know whether the subcallus was dusted or shiny black ?


Theo
 
John Carr
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Posted on 10-09-2016 12:17
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Nothing shiny black on the front.
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John Carr
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Posted on 10-09-2016 12:17
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Better focus, worse light.
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Zeegers
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Posted on 10-09-2016 17:56
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Yes, it seems to be the typical lineola.


Theo
 
John Carr
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Posted on 10-09-2016 19:16
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Zeegers wrote:
Yes, it seems to be the typical lineola.

Theo


Thank you. Is the condition of the subcallus normally the same in both sexes of Tabanus and Hybomitra?
 
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Zeegers
#8 Print Post
Posted on 11-09-2016 08:28
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Yes, it is.
IN some species , like Hybomitra nitidifrons and some of your Canadian ones, the condition of the subcallus is quite variable, however, not sexually dimorph.

Of course, the shape of the subcallus is slightly different, if you have males with big eyes like here.

Theo
 
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