Identification of Hymenoptera (wasps, bees, ants)

Help me deal with wasps.
All Volgograd region, Nizhne-Chirskaya St.

6-8 - Eumenes spp., I can't determine the type from such photos.

Ukraine, Rivne region, June 7.
Ammophila sabulosa ?

Ukraine, Rivne region, June 13.
Eutomostethus ephippium ?

At least up to the genus.
M. O., Poplar, on the caterpillar Xylena solidaginis 25.06.2017

Good evening. In July, I found a bee colony on the side of the road. Can they be identified?
Novgorod region.

Novgorod Region, August 15. I found a wasp digging a hole on the path. As far as I can tell, it's Gorytes or Argogorytes.
If possible, please help me determine more precisely.

More precisely-Gorytes. But there is not enough data before the view.

Thank you. But can these oss be identified? Is it a single view? I sin on Agrogorytes, but only by looking at the pictures. Leningrad region, June-July.

No, these are also Gorytes (in Argogorytes, the second sternite of the abdomen protrudes at an angle in front, but there is no such thing here, which is clearly visible in the second picture).
By the way, in the last two pictures there is only one species, only the first one is male, and the second one is female.
To guarantee the definition, you need to see the sculpture of the pygidium, the base of the first abdominal tergite, and/or at least the shape and color of the platypus.

No, these are also Gorytes (in Argogorytes, the second sternite of the abdomen protrudes at an angle in front, but there is no such thing here, which is clearly visible in the second picture).
By the way, in the last two pictures there is only one species, only the first one is male, and the second one is female.
To guarantee the definition, you need to see the sculpture of the pygidium, the base of the first abdominal tergite, and/or at least the shape and color of the platypus.

Here's another wasp. July, Leningrad region. ?

But this one flew in June, Novgorod region. Nests on trampled paths.

July, Leningrad region. Probably cerceris, but if so, which one?

Here in this picture, the head is somehow visible from the front.

2055, 2056-female Cerceris quadrifasciata (Panzer, 1799)

Thank you so much for all the pictures at once, so as not to repeat yourself.
But if this wasp is Cerceris quadrifasciata, then I probably misunderstand this beast here. He's bigger. Novgorod region, July, a large colony, flew in the heat.

Here are more wasps. Novgorod region, August, sandy path in a pine forest under a power line

I think it's a male Crabro. Is this the case, and is it possible to define up to a view? Novgorod region, June, pine forest.