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Cryptocheilus alternatus (or comparatus)
4-5 cm long solitary digger wasp, paralyses its victims with venom, drags them to the previously prepared hole and lays an egg into the still alive prey. After the hatching larva uses pray as food for growth and development.
Most of the southern Europe, near roads and walls
This is actually a spider wasp in the family Pompilidae
http://en.wikipedia.org/wiki/Spider_wasp...
It has a good sized wolf spider (family Lycosidae)
http://en.wikipedia.org/wiki/Wolf_spider...
Also, have a look at this link for something that looks similar to yours
http://insectes.lecolebuissonniere.eu/po...