It is Bembecinus (above and below males, in the middle a female). I cannot recognize, wheather it is hungaricus or tridens, because important characters are not visible. B. tridens is very common, B. hungaricus rare even in Hungary. It would be necessary to can see female clypeus (all black in tridens, yellow in hungaricus), or band on first tergum (continuus in tridens, interrupted in hungaricus), or wing venation.
The first new pic is a clear B. tridens female. The last pic is a clear male, probably also tridens. The two specimens in the first pics are both males. I don't know what they are doing there, but there are clearly 7 abdominal segments in the lower specimens (females have only 6)
Thanks also for your message, tomorrow I will look for it.