Phase-space diagram for Mlow galaxies at R < R₅₀₀ for nine LoCuSS clusters with passive BCGs (left panels) and nine LoCuSS clusters with active BCGs (right panels). Non-SF galaxies (nonSFgals sample) are shown as cyan symbols, PBCG and ABCG SF galaxies are shown as red and blue asterisks, while the symbols for galaxies with higher O/H metallicities are additionally framed by black squares. The triangle in the lower left-hand corners shows the innermost part of the virialized region containing less than 5% interlopers (due to projection effects), as derived by Rhee et al. (2017) using cosmological hydrodynamic simulations of groups and clusters.