Left panel: HRD positions of the LMC WR components. Labels correspond to the BAT99 catalog. A selection of binary evolution tracks (Eldridge et al. 2008; Eldridge & Stanway 2016) calculated with the BPASS code for Z = 0.008 are plotted. The tracks show the evolution of the primary star for several initial masses M_1, i and initial mass ratio and period of q_i = 0.9 and P_i = 25 d, respectively. The colors and symbols code the hydrogen abundance and WR type, as described in the legend. The WR phase is defined for T_* >  20 kK. Right panel: as left panel, but showing BPASS tracks calculated for non-rotating single stars, and including the putatively single LMC WN stars (gray symbols, adopted from H14), and the WN/O3 stars (gray triangles, adopted from Neugent et al. 2017). Little arrows imply lower bounds on T_* (degeneracy domain or insufficient S/N).