Position of our sample stars in HRD with colour-labelled indication of Li (LTE) range as in Fig. 4. The sample is split in two metallicity ranges ([Fe/H] above and below −0.2 dex, left and right respectively). The theoretical evolution tracks of the standard models (no rotation) of Lagarde et al. (2012) are superimposed for stars with masses between 1 and 6 M_⊙ computed with [Fe/H] = 0 and −0.56 dex (left and right, respectively); we removed the two outliers with errors on the parallax larger than 70%.