Moscow region Furcula bifida/ Furcula furcula

Furcula bifida here: http://molbiol.ru/forums/index.php?showtop...dpost&p=1487505
Then, in my opinion, it flew non-individually. However, here the most accurate answer can probably be given by Gennadich (he is the owner of the point)
And the second one, if I'm not mistaken, is also not uncommon (I didn't catch it myself, but there is one).
You can view the Moscow region residents here: http://insectamo.ru/hete/97-hete/notodonti...furcula-furcula

Vasily, thank you, but I would like to see the series (1-3 copies). with an exemplary, typical pattern still don't help me confidently distinguish one view from another).

P.S. This site is known to me, as well as http://www.lepiforum.de/lepiwiki.pl for example, and some others. A determinant is available for bombycoids (FREINA, J. J. de & WITT, T. J. (1987). Die Bombyces und Sphinges der Westpalaearktis), but also somehow still did not help much in the case of furcula.

This post was edited by Alexander73 - 10.10.2016 13: 12

Just in case, I will duplicate the photo that I posted in the "Classification" branch, in the topic "Definition of butterflies". I will be grateful for an explanatory comment on these supposedly ten bifids.

This post was edited by Alexander73 - 10.10.2016 13: 24

Pictures:

post_587185_1475962961.jpg — (297.08 k)

UPD
The difference in the shape of a sling does not always work as it was shown, for example, in the famous picture (below)

Photos of females of both species from the site http://www.lepiforum.de/lepiwiki.pl

This post was edited by Alexander73 - 10.10.2016 14: 52

Pictures:

f_b.jpeg — (40.51к)


post_11498_1421594575.jpg — (231.56к)

Alexander, your photo shows all the bifids. Undoubtedly.
An additional defining feature-see the median sling, or rather its outer edge.
In bifida, the border of the outer edge of the sling is a slightly curved black stroke, which is quite bold in the upper and middle third. Towards the bottom, it becomes much thinner. This stroke is usually smooth-edged.

The furcula has such a "stroke-the border" of the sling is thinner, if it narrows down, then not much. In addition, the outer edge of the sling at the furcula is a polyline with varying degrees of"kinkiness".

Further - some geographical and systematic data.
In Europe, there are different forms of furcula, which some authors distinguish into 4 subspecies. In the Central Non-Chernozem region, butterflies with a noticeable grayish-blue background tint live. And in Western Europe, they are almost white.

For an example of variability, dark forms like bifids and furcula fly in northern Europe.

Let's take another photo of furkul - let's see. I will try to take photos of my own today

Pavel, I understand correctly, the outer edge of the ligation is distal, external (versus proximal, internal)? What do you think about the photo above-German furcula and Austrian bifida? (This trait is also, I think, poorly expressed in them.)


P.S. In addition to these ten, I have only a few bicuspices, there are no furcules yet)
All my tufts (24 types) were placed in one box of 30 x 40, were impaled in a roll, so I decided to disassemble them, at least put them in relative order...

Thanks!
I would look at your furcula with great interest.

yes, yes-distal.
well, what about the German furcula and the Austrian bifida-furcula as furcula and bifida as bifida.
I saw both of them in Munich.

Here, in the photo, everything is from the Moscow region. The differences are clearly visible. Furcula, at least just smaller.

Pictures:

bifida_furcula_m.jpg — (325.46к)

Yes, the differences here are clear and striking. Thanks!
And special thanks for the hint regarding the size, indeed, having a different-sex pair of the same species in front of your eyes, it is easy to compare it with the defined instance! (The same "German" and "Austrian" difference in wingspan-1cm!)