Western liturgy has never had an explicit epiclsis.
If I remember Rome was the only one to lack one, or rather lose the one it had.
Epiklesis (Latin invocatio) is the name of a prayer that occurs in all Eastern liturgies (and originally in Western liturgies also) after the words of Institution, in which the celebrant prays that God may send down His Holy Spirit to change this bread and wine into the Body and Blood of His Son. This form has given rise to one of the chief controversies between the Eastern and Western Churches, inasmuch as all Eastern schismatics [sic] now believe that the Epiklesis, and not the words of Institution, is the essential form (or at least the essential complement) of the sacrament....http://www.newadvent.org/cathen/05502a.htm
The Catholic [sic] Church has decided the question by making us kneel and adore the Holy Eucharist immediately after the words of Institution, and by letting her old Invocation practically disappear. On the other hand Orthodox theologians all consider the Epiklesis as being at least an essential part of the Consecration.
Btw, the Vatican's take on this question is the background of the formula "hocus pocus."