A try to found his name,on this site :http://www.cinematografo.it/pls/cinematografo/consultazione.redirect?sch=22616 i found a longer cast list then the one on the CIDB
The new names are:
LEO TALAMONTI credited as italian premier according to imdb
So we have many names to check,and maybe one of this name could belong to another unknow generico,because if i remeber right our nose friend is not the only unknow generico present in this movie.
Vlado Stegar have tre credits on imdb:
Cuore di cane 1976,and in A matter of time imdb lists him as bank clerk
According to imdb in IL PROFETA RENATO MARZANO plays Paolo,and the CIDB lists him also in Divina Creatura
Off course here we are talking just about imdb,you never know about fotoromanzi and cinema encyclopedias,so we have something to search,let's hope we will found something !