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 Tabanus lineola 2016-IX-9
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| John Carr |
Posted on 10-09-2016 02:13
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 Administrator Location: Massachusetts, USA Posts: 10309 Joined: 22.10.10 |
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. John Carr attached the following image:  [93.92Kb] Edited by John Carr on 10-09-2016 19:17 |
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| John Carr |
Posted on 10-09-2016 02:14
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Administrator Location: Massachusetts, USA Posts: 10309 Joined: 22.10.10 |
Dorsal
John Carr attached the following image:  [154.52Kb] |
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| Zeegers |
Posted on 10-09-2016 08:01
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Administrator Location: Soest, NL Posts: 18888 Joined: 21.07.04 |
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 |
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| John Carr |
Posted on 10-09-2016 12:17
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Administrator Location: Massachusetts, USA Posts: 10309 Joined: 22.10.10 |
Nothing shiny black on the front.
John Carr attached the following image:  [81.32Kb] |
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| John Carr |
Posted on 10-09-2016 12:17
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Administrator Location: Massachusetts, USA Posts: 10309 Joined: 22.10.10 |
Better focus, worse light.
John Carr attached the following image:  [90.96Kb] |
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| Zeegers |
Posted on 10-09-2016 17:56
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Administrator Location: Soest, NL Posts: 18888 Joined: 21.07.04 |
Yes, it seems to be the typical lineola. Theo |
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| John Carr |
Posted on 10-09-2016 19:16
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Administrator Location: Massachusetts, USA Posts: 10309 Joined: 22.10.10 |
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 |
Posted on 11-09-2016 08:28
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Administrator Location: Soest, NL Posts: 18888 Joined: 21.07.04 |
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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