Identification of Hymenoptera (wasps, bees, ants)

Dear colleagues, I would be very grateful for your help in clarifying the definition of this species - Ammophila heydeni Dahlbom, 1845? SW Crimea, kovylno-petrofit steppe, 13. VIII. 2018. Body length is 17 and 20.5 mm. And also, can you tell me what caused the slight difference in the color of the abdomen-sexual dimorphism?

Hello. Help identify the insect. And does such a thing even exist? It seems to me that this is Photoshop, because I have never seen such things before.

Ukraine, Rivne region, July 1.
Cerceris arenaria, female ? (the white color of the stripes and spots is confusing, although the antennae are dark)

Please help me identify the bee-
Irkutsk region, Lake Baikal, Cape Ryty,
20.06.2010, leg. O. Berlov
Body length ~ 12 mm.

Bumblebees are also bees, but carpenter bees are not bumblebees. In the photo, probably another species-Xylocopa valga (carpenter bee ordinary, differs from the purple shorter first segment of the flagellum of the antennae).

Can you help me identify this type of road wasp (Pompilidae)? Size 16 mm.
South Crimea, seashore, on the inflorescences of Crithmum maritimum, 4. IX. 2018.

This is a cryptoheilus, which is a pity for usk

Good afternoon.
Please tell me the type of sheet.
Taken on the Black Sea coast, Pomorie, June 15, 2018.

Well, so the experts will determine how I know what kind it is) In general, from my point of view, if a person catches insects, dissects, then in theory he has even amateur, but scientific interests in this group, respectively. questions about their definition in the presence of dry material on such forums sound strange, you can use the determinant to determine what type it is,

Well, so the experts will determine how I know what kind it is) In general, from my point of view, if a person catches insects, dissects, then in theory he has even amateur, but scientific interests in this group, respectively. questions about their definition in the presence of dry material on such forums sound strange, you can use the determinant to determine what type it is, or give it to Carcharot, let it determine)

Such forums are suitable precisely when the photographer does not catch insects but only takes pictures, in which case the definition of the photo is justified and quite adequate, especially if it is determined by specialists.

Thank you again)) Although it is very far from the os, and the appearance here (on the forum) is exclusively due to nostalgia for the hobby of entomology in my youth. Your message made me take the trouble to determine it myself. I find Cryptocheilus egregius (Lepeletier, 1845) in the "Index of insects of the European part of the USSR". I went through all the faunal reports known to me for the Crimea, the type for the peninsula was not previously indicated, or am I mistaken?!

Ancistrocerus nigricornis. Only this is a male, he does not mink. Probably waiting for the females.

On Flickr, they say that Cerceris albofasciata