Fig. 3

Barcode Gap analysis. Each species is represented by a single dot. Along the 1:1 slope, the difference between maximum intraspecific distance and distance to the NN nearest neighbor is zero. All dots are located above the 1:1 slope, indicating the presence of barcoding gaps; a indicates the species with the highest distance to its nearest neighbor, and b shows two overlapping data points, representing species with the lowest distance to a nearest neighbor