Aitoff projection of galaxies in the 2M++ with a K-apparent magnitude lower than 12.5 (grey points) and excluding the region around the Galactic Plane (dashed lines). Open squares represent the 583 galaxy groups identified in the 2M++ catalogue using a contour overdensity contrast of 433 with a group radial velocity lower than 12 500 km s^-1, and excluding galaxy groups that are closely related to CGs, while filled circles are the 63 2MCGs that lie in the restricted 2M++ area used in this work