Identification of Hymenoptera (wasps, bees, ants)

Not something, but specifically the earth. I got into someone else's nest and got dirty.

A male, it is unlikely that he is rummaging in the nests. Most likely, he chased the females and smeared himself in the wet clay. And then it dried up.

Heh, where did he "chase the females"?

On wet ground? As an option? Did you attack the females? Or did he fight with other males? According to the experience of observations for males, it is quite a common option. Often they start "disassembly" in the air and fall to the ground...
But I've never met any male Sphecodes that would climb minks ...

What if he just recently got out of his cocoon, smeared on the way out?

  
Is it possible to identify a wasp and what it holds in its paws? July 21, Pskov region.

This is a male Crabro cribrarius.
He doesn't hold anything in his paws. It's just that the males of some species of the genus Crabro have their front tibia extended in the form of plates, which they use to cover the female's eyes during mating.

And for what purpose? So that she doesn't file for alimony?

Are these wasps?
(Middle Urals, July).

Ant is defined? Moscow region, 30.04.

Hello. Help determine
Saratov region, Engelsky district, April-May

Hello. Help determine
Saratov region, Engelsky district, April-May

Please help me with the definition.
No. 5-1-Quarry, sandstone, roc. Nizhnekamsk. Tatarstan. 2.05.2018
№4-1-Mixed forest, in a rotten tree. okr. Nizhnekamsk. Tatarstan. 2.05.2018

Please help me identify the carpenter bee. Sevastopol, 06.05.2018.

Please help me with the definition. Mixed forest, in a rotten stump (4 individuals), okr. Nizhnekamsk. Tatarstan. 2.05.2018

Dolichovespula sylvestris?

For ants, the best view is strictly from the side. And for many species - so that the hairs are visible.
No. 5 genus Formica. The view is more complicated. You need to look at the distant hairs on the back of the neck and on the scales of the stalk. It seems that they are there, but you need to look at how many and how they are located.
#4 the genus Lasius. I think Lasius platythorax. But it would be good to look at the side view and the trim from different angles for more confidence.

I think I managed to take a picture. I hope this helps determine

Can anyone tell me what it is? http://molbiol.ru/forums/index.php?showtop...dpost&p=1712618] ?

Some kind of ichneumonid. That's just the size of the photo is very small

But like this?

Good afternoon.

Tell me, please, what kind of insect is this, with such a "shell"?

Found in the south of Crimea.

According to Lasius-Yes, I believe that this is Lasius platythorax.
Formica - the photo does not show the scales of the stalk and the underside of the head. Most likely, there will be no hairs on the underside of the head, on the scale the hairs will be on the upper edge in a single row, or they will not be at all. If this is the case (in my opinion it is most likely), then it is most likely Formica cunicularia. Probably, the part of it that was previously Formica cunicularia glauca and was reduced to synonyms to Formica cunicularia (Atanassov & Dlussky, 1992). Some scientists consider it a species of Formica glauca. The Bolton site lists Formica glauca as an invalid species.
Personally, I would not get into this jungle of taxonomy and would call this ant Formica cunicularia. This is most likely the case. But without guarantees.