Location of the 217 Lupus PMS stars overlaid on the ¹²CO intensity map from Tachihara et al. (2001). Stars from US and UCL subgroups of the Sco-Cen association as given in de Zeeuw et al. (1999) and Preibisch & Mamajek (2008) are also included in this figure. Black filled circles denote the Lupus candidate stars and open symbols indicate US and UCL members. Stars marked with green filled squares were classified as both Lupus and UCL members in the literature. The blue dashed box encloses the Lupus star-forming clouds.