Top: zoom into the high-quality Gaia DR2 CMD of bright stars (5 <  G <  12 mag) with parallaxes > 2 mas, RPlx >  10, RUWE < 1.4, and Np >  9 as green dots. As in Fig. 11, all our old and new Ap stars are shown as filled and open lozenges, respectively. In addition, we indicate Ap stars with parallaxes < 2 mas with open squares, and those with problematic astrometry (RPlx <  10 or RUWE > 1.4 or Np <  10) with small filled circles. Binaries (according to Mathys 2017 (bf = 1) or HIPPARCOS (Nc = 2)) are overplotted as large open hexagons. Obvious outliers are labelled with their names (see text). Bottom: only 47 (of 82) old and 46 (of 153) new Ap stars remain after our astrometric quality criteria are applied. One remaining CMD outlier that falls below the blue MS edge is labelled.