Sky distribution, in Galactic coordinates, of YSO candidates (large filled circles) in the Gaia DR2 catalogue of LPVs with ϖ∕ϵ(ϖ) > 10. The colour of the markers is related to the parallax according to the colour scale shown on the right of the figure (sources with parallaxes below the minimum or above the maximum values shown on the scale are coloured with the colour at the respective end of the scale). The background small grey points represent all LPV candidates in the catalogue. The location of the Gould belt determined from regions of stellar formation and dark clouds (Taylor et al. 1987) are indicated bythe green and blue lines, respectively, and its main stellar associations are labelled in magenta.