Upper panel: dust-to-stellar mass ratios versus stellar masses of Virgo SFDs (filled dots, rings, ringed dots). The different shapes and gradation of blue correspond to three ranges of the Hi-deficiency parameter as defined in Fig. 6. For comparison, we show data for HeViCS BGC (purple diamonds), KINGFISH dwarfs and spirals (large and small grey squares), and DGS (red-purple triangles). Hi-deficient HeViCS BGC galaxies (Def_HI ≥ 0.5) are indicated by a diamond with a cross. Lower panel: dust-to-stellar mass ratios versus Hi deficiency for Virgo SFDs and HeViCS BGC.