Identification of Diptera (flies, mosquitoes, etc.)

  Volucella inanis (Syrphidae)

Hello!

Dvuhrylye, 01-04.07. 2009, Moscow, Kuskovo Park. Macro hunting out of curiosity and for training. If you do, I'd be grateful.

  Please help me identify the insect. As I understand it, it belongs to the order Diptera.
In case of incorrect image loading, I apologize in advance, this is the first time I have created a post on this resource.
I forgot to specify right away - it was taken on 5.07.2009 in the Voskresensky district of the Moscow region.

Help us define the view. Filmed in Chuvashia, on the territory of the national park "Chavash Varmane". 18.06.2009

Dear friends, tell us if anyone can find out on these photos what kind of insect.
I photographed it today, I live in the Yamalo-Nenets Autonomous District, Salekhard, this is the Arctic Region, the Urals.
For as long as I've lived in the north Nirazu has never seen anything like this:

please define it

This is not a representative of the genus Rhagio (family Rhagionidae) by chance?
Like I guessed right?

please define it

These murmurs were filmed in Smolny region in early July of this year. The male hovered over the female.
Can I define the view?
Thank you.

Dioctria aelandia (L.)

Thanks Alex, I tried to bring the 1948 determinant (there are 8 species) to something like E. nemorum, but I quickly realized that this was a fortune telling on coffee grounds and left it.

I also got Eristalis arbustorum (as E. nemorum is now called), but to be honest, this is really a divination. Although the fact that we both got the same look is not bad. Maybe we're right?

More precisely, the name "E. nemorum" was reduced to junior synonyms for E. arbustorum more than twenty years ago (Thompson et al., 1982). And everything that was referred to as E. nemorum should now be called E. interrupta.

I live and work in the summer in the village of Sedovo (a resort town on the coast of the Sea of Azov, Ukraine) From year to year we are pestered by some mosquitoes and in huge numbers. There are so many of these creatures that you can't breathe or hide from them. The most interesting thing is that they do not bite, but sit tiresomely everywhere in the form of bedding and spoil everyone's rest.



Specialists entomologists please tell me what kind of insects they are:
name, species, habitats and breeding
grounds If possible links to resources where you can study them
in detail Thank you in advance

P. S. I want to study the enemy in detail

  VSB,
2 and 3-monthly, 2nd, apparently Ectophasia crassipennis .
I regularly watch the Dipter website.info on the Tachinidae family, but not everything can be identified by its appearance - http://www.diptera.info/photogallery.php
The last animal in the photo is a bee.