Phase-space diagram based on all MAC0416 spectroscopic members (black open circles). Our study concentrates on the objects for which we were able to measure metallicities (Zgals sample). Restricting ourselves to intermediate masses 9.2 < log (M/M_⊙) < 10.2 we depict high metallicity objects (consistent with the local MZR) as red symbols and galaxies with lower metallicities (below the local MZR) as blue symbols. The dashed vertical line indicates R₂₀₀ ~ 1.8 Mpc of the cluster (as reported in B16); the dashed magenta line indicates the caustic determined by B16. The diagram enables us to divide the cluster galaxies into infalling objects (above and to the right of the magenta line, star symbols) and accreted objects (filled circles).