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Diptera.info :: Identification queries :: Diptera (adults)
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Chrysops ?
Gumenuk Vitalij
#1 Print Post
Posted on 17-01-2014 06:39
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Moscow Region, Ramensky area, village Hripan vicinities, a garden site.
2013.06.15
Gumenuk Vitalij attached the following image:


[196.86Kb]
 
Ectemnius
#2 Print Post
Posted on 17-01-2014 08:59
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Location: The Netherlands
Posts: 845
Joined: 22.11.11

Hello Gumenuk Vitalij,

Yes, a Chrysops. Looks like C. caecutiens with the black legs...

Greetings,

Ectemnius
 
libor
#3 Print Post
Posted on 17-01-2014 09:24
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Location: western Bohemia
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Joined: 30.05.09

I think it is Chrysops divaricatus...
Libor
 
Gumenuk Vitalij
#4 Print Post
Posted on 17-01-2014 09:41
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Ectemnius, libor - Thanks.
I incline to more Chrysops caecutiens
 
libor
#5 Print Post
Posted on 17-01-2014 10:49
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Location: western Bohemia
Posts: 1266
Joined: 30.05.09

If I see well, the black markings on 2nd tergum is demarcated from the 1st and 3rd tergum by yellow color, so my opinion is the same still. Theo will arbitrate it Wink
Libor
 
Ectemnius
#6 Print Post
Posted on 17-01-2014 17:45
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Location: The Netherlands
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Hello Libor & Gumenuk Vitalij,

I Incline to agree with Libor, as I have never even heard of C. divaricatus.
Theo, what say thee?

Greetings,

Ectemnius
 
Gumenuk Vitalij
#7 Print Post
Posted on 17-01-2014 20:17
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Thanks.
And Teo is silent. We wait for it the conclusion?
 
Zeegers
#8 Print Post
Posted on 18-01-2014 14:32
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Location: Soest, NL
Posts: 18472
Joined: 21.07.04

I didn't response at first, because I agree with caecutiens.
And not for Ectemnius' reason !

But it is very difficult to call, so I had a second look.

In divaricatus, not only the black 'V' on tergite 2 is diverging (it is a V and not a U) but also it diverges more rapidly (so, it is a curly V). Tergite 2 is more white than yellow in divaricatus, as are the hairs on pleurae.

Agreed, the spot on tergite 2 does not reach the hind margin of the tergite. In this respect, this spot resembles viduatus (whici has red tibiae of course).
This happens once in a while in caecutiens, more so in sourthern regions. This form has been called ' f. ludens' in the literature.

I must admit, it is quite difficult to judge from this angle and I had my doubts as well.


Theo
 
Gumenuk Vitalij
#9 Print Post
Posted on 18-01-2014 14:57
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Many thanks
 
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28 March 2024 23:57
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