COI PCR reaction condition (final volume 20 μL) PCR program Initial denaturation Total 3 step cycling Denaturation Annealing Extention Final elongation Buffer (5Prime, Gaithersburg, USA), 16SrRNA 94°C for 3 minutes 40 cycles 94°C for 30 seconds 51°C for 30 seconds 72°C for 35 seconds 72°C for 5 minutes 45 cycles 94°C for 25 seconds 57.5°C for 15 seconds 72°C for 2 seconds 72°C for 10 minutes 2μL of 10× buffer MgCl2 1.5 mM dNTPs (dNTPmix, EurocloneS.p.A - Life Sciences Division, Pavia, Italy) 200 μM each BSA (Purified BSA 100×, New England BIOLABS® Inc. Ipswich, MA, USA), 25 ng/μL Primers 300 nM PerfectTaq DNA Polymerase (5Prime, Gaithersburg, USA), 1.25 U DNA template 100 ng DNase free water (Water Mol. Bio. Grade, DNase–RNase and Protease free, 5Prime GmbH, Hamburg, Germany). Up to final volume Table 4SM. Standard PCR program and reaction condition used for the amplification of the COI and 16SrRNA gene. The amplifications were carried on a LifePro™ Gradient Thermal Cycler (BIOER TECHONOLOGY CO., LTD).