Barcode gap plot for the single and multilocus barcodes.

<p>Distance to nearest neighbour (NN) vs. maximum intra-specific K2P distances for the individual (A) and the combined (B) barcode regions. Each dot represents one or several individuals since they share identical values of intra-specific and inter-specific distances. Dots above the 1:1 line indicated the presence of a barcode gap. Due to the range of distances between analysed regions, the graphs presented are drawn to individual scales, according to the loci being compared.