Unknown caterpillar

Hi to everyone,

yesterday during a collection of chestnuts in Marradi (FI) I found these two caterpillars on the ground, what specie is?

[Blockierte Grafik: http://i41.tinypic.com/2nbr11g.jpg]

[Blockierte Grafik: http://i40.tinypic.com/10ek4rc.jpg]

[Blockierte Grafik: http://i44.tinypic.com/2ztdop0.jpg]

Many thanks guys, it seems that it is right identification! They are spinning their cocoons right now.

Best regards,
Fabio