The name DNA barcoding figuratively refers to the way an infrared scanner univocally identifies a product by using the black stripes of the Universal Product Code (UPC). An ideal DNA barcode requires two fundamental characteristics: high taxonomic coverage, and high resolution (Hebert et al., 2003). High taxonomic coverage (also called ‘universality’) refers to the correct amplification of the genomic region chosen as DNA barcode in the widest panel of taxa. On the other hand, a high resolution ensures the identification of different taxa, based on interspecific differences in DNA barcode sequences. As a general principle, DNA barcode regions should have a high interspecific, and low intraspecific variability.