Is it Pimpinela saxifraga?

It's not Pimpinella saxifraga. You don't can determinate Apiaceae by this fotos, but Pimpinella saxifraga is a little Apiaceae. In Slovakia you find Ferula communis, Carum carvi and Pastinaca sativa as foodplants of Papilio alexanor, if you want to hatch this species.
Regards
Klaus-Bernhard

Hallo Daniel,
eine genaue Bestimmung ist mit den Bildern,nur von den Blüten,nicht möglich.
Sehr wahrscheinlich,ist es eine Art aus der Gattung Seseli (Bergfenchel).

Gruß, Heiner

Hello Daniel,
without pics of the leaves determination of this species is impossible.
Do you have some pictures of the whole plant?
Regards
Arnd

Hallo Daniel,

Arnd and Heiner are right. Without the leaves determination of this species is difficult.
It could be Pimpinella saxifraga or Scaligeria napiformis. I found larvae of P. alexanor also on this plant (Scaligeria) on Peloponnesos.

Scaligeria napiformis

Regards
Jürgen

Hello Daniel,

Zitat

Can I use for my experimentes with breeding also Trinia glauca ,Falcaria vulgaris or Seseli osseum?They growth near my house.
In garden I have Ferula communis and Opopanax chironimum

I don´t know, if you can breed them with these plants. Only on Ferula communis I saw many larvae of P. alexanor ( about 40) on one big plant (more than 2,5 m).
At home, I fed them successful on Pastinaca sativa and Carum carvi, especially on the flowers and soft seeds.

Look at the foto:

Gruß
Jürgen

PS: Look also my Artikel about Papilio alexanor in Actias > Veröffentlichungen > Lepidoptera Artenbeschreibungen > Papilionidae > Papilio alexanor (PDF) Link: Papilio alexanor