Left: the fraction of weak-SFG among SF galaxies (weak-, dusty-, and blue-SFGs) is plotted as a function of local density in three stellar mass bins: log M _*/ M _☉ = [9.5, 10], [10, 10.5], and [10.5, 11]. Right: the relative fraction of the intermediate-MXG vs. the weak-MXG is plotted as a function of local density in two stellar mass bins: log M _*/ M _☉ = [10, 10.5] and [10.5, 11]. Because of the cut in S11, less-massive (log M _*/ M _☉ < 10) MIR-blue (N3 − S11 < 0) galaxies are not detected.