The non-coding regions of the mt genomes of T. multiceps, T. hydatigena and T. pisiformis comprised 2 major regions: a short non-coding region (SNR) or NR1 (73, 64 and 67 nucleotides, respectively) and a long non-coding region (LNR) or NR2 (176, 135 and 64 nucleotides, respectively). Among published taeniid mtDNAs the LNR of T. pisiformis is the shortest. SNR and LNR were located between trnY and trnL1 (UCN), and nad5 and trnG, respectively.