Fig. 4: neighbour-joining tree based on cytochrome B (CytB) sequence of 97 different strains downloaded from GenBank. Branch values represent bootstrap percentage over 1,000 replications. Different discrete typing units (DTUs) are indicated with vertical bars (TcIVS: strains TcIV from South America; TcIVN: strains TcIV from North America). Some sequence names were coloured to show the corresponding DTU (blue: TcIII; red: TcIVS; violet: TcIVN; green: TcV; yellow: TcVI).
