Total magnitude vs. the nuclear luminosity fraction (f_nuc) for UCDs and nucleated dEs in Virgo. Filled yellow circles represent UCDs (f_nuc  =  1). Filled dark red circles represent certain/probable eUCDs. Filled blue circles and squares are strongly nucleated dEs with and without velocity measurements. Gray-filled circles and gray open circles represent Virgo nucleated galaxies with and without velocity measurements. A gray dot indicates the average f_nuc and magnitude of eUCDs (﹩{\langle {g}_{\mathrm{tot}}{^{\prime} }\rangle }_{\mathrm{eUCD}}=20.0﹩ mag and ﹩{\langle {f}_{\mathrm{nuc}}\rangle }_{\mathrm{eUCD}}=56 \% ﹩), with error bars of 1σ distribution. The gray dotted line shows the assumed f_nuc evolutionary curve with constant nuclear magnitude. The shaded regions represent the 1σ (orange) and 2σ (light blue) boundaries on the evolutionary curve.