#5
In general, Prionyx ID is not so easy. When white tergal bands are marked and large, than only kirbii is possible. When bands are weaker, than lividocinctus is also possible. The second specimen is such a doubtfull case.
But I think that lividocinctus is much rarer in Spain than kirbii, which is a very common species in the mediterranean area, so kirbii is probable in both specimens.
Regards, Christian