A) Plots of C. jacchus and C. penicillata admixture within the two hybrid zones as assigned by STRUCTURE. The two hybrid zones are labeled by their initials. B) Plots of C. jacchus and C. penicillata BAPS admixture probabilities. Plots are divided by reference C. penicillata individuals (P), reference C. jacchus (J), and the hybrid zones labeled by their initials. In both plots, purple and green bar proportions indicate C. penicillata and C. jacchus ancestry, respectively. Within the PJ and RJ panels, black lines separate individual capture sites within each hybrid zone, following the order given in Fig 2 for the PJ zone and Fig 3 for the RJ zone. White lines within each hybrid zone panel separate the southern and northern portions of each hybrid zone. Also, in panel A, CEMAFAUNA captive marmosets are found between the two white lines.