GSMFs for ETGs using various classification schemes: red galaxies ( = 1), passive (log (SSFR/Gyr^-1)  <  −2), spheroidals ( = 1 + 2.0,  = 1,  = 1), absorption-line galaxies ( = 1), and “bona fide ETGs” as defined in Sect. 4. Only 1/V_max determinations have been plotted, with their uncertainties. Different lines and colours refer to different redshift ranges (see upper left panel). Grey hatched region, bounded by solid black lines, refer to local GSMF for ETGs derived from Baldry et al. (2008, 2006) (see text).