Genetic diversity found within each STRUCTURE-based [51] genetic clusters considering (A) all isolates, (B) T. brucei (Tb) isolates only, and (C) T. evansi (Tev) isolates only.

Sample size within the cluster (N), allelic richness (AR) calculated in FSTAT v1.2 [54], and observed heterozygosity (HO), expected heterozygosity under Hardy-Weinberg expectations (HE), and the inbreeding coefficient (FIS) calculated in the R package HIERFSTAT v0.4–10 [55]. Allelic richness could not be calculated in clusters made up of less than 4 individuals (marked n/a).