The morphological fractions of galaxy as a function of halo mass using the Y07 (C4) catalogue, separated into subsamples of stellar mass in the upper (lower) panel. Here the early-type galaxies are shown by the red solid lines and the spiral galaxies by the blue dot–dashed lines. The increasing line thickness corresponds to increasing bins of stellar mass, and errors are Poisson, of which we show every third (all) for clarity.