EW_Li vs T_eff for the veiling-corrected sample as obtained with FRAPPE. The symbols have the same meaning as in Figure 3, with the addition of pink pentagons that indicate EW_Li measurements performed on X-Shooter spectra of Class II sources located in Lupus from Biazzo et al. (2017). The mean EW_Li values and associated standard deviations in the T_eff range from 4200 K down to 3000 K and are plotted in yellow and pink for the Orion Nebula and Lupus, respectively.