looks like crematogaster scutellaris
I second Crematogaster scutellaris, I also checked on ant maps and it says that they live in the area of the Mediterranean
one should still err on the side of caution because this could also be schmidti
Recent Antmaps records are showing that C. scutellaris has been flying in that region like crazy; especially in Spain, meaning that they are likely flying across and within other countries close by. This means that your original guess (supported by like 20+ other ant keepers on Antmaps) is more likely correct.
Keeping:
3x - S. molesta (colonies and single queen) 1x - C. nearcticus (founding but no eggs)
New!
1x - C. chromaiodes (colony) 1x - C. subbarbatus (founding)
1x - F. subsericea (founding) 1x - T. sessile (mega colony)
3x - P. imparis (colonies)
2x - L. neoniger (founding)
Check out my C. nearcticus journal here: https://www.formicul...cticus-journal/
Check out my C. chromaiodes journal here: https://www.formicul...aiodes-journal/