Spatial distribution of the groups identified in Coma. Left: Weak-lensing mass of Coma (courtesy of HyeongHan et al. 2024, see their Fig. 1), with the projected spatial distribution of the 42 groups identified by the DS+ method. Black crosses with a white edge indicate the location of the groups with more than four members identified by Adami et al. (2005a). Right: Groups identified by DS+ within the field of view of our HERON images of Coma, plotted over a pseudo-color image of the Coma members. The blue symbols with a white edge indicate the location of the brightest galaxies that were labelled in Fig. 1, using the same markers. North is up, east is left.