Small ant colony found in the garden (Belgium)

[AnthonyBR]

Hello

A few weeks ago, I found a small colony of ants in my garden.
At least I have done some research, but i'm not sure what species it is. The ants were in a piece of bamboe.
In the bamboe: +- 100 workers, +-10 males and 1 queen (I hope).

I think myrmica? But i'm not sure. By the way, I live in Belgium and I caught the ants on 31 of August.

Thanks!

Photo's: https://imgur.com/a/b4QmZSh

[cheetawolf]

the queen has the same body structure as a tetramorium but thats all i know

[Kaelwizard]

That is definitely Myrmica. I don't know where you got Tetramorium.