LOCK Alun Wyn Jones says Wales know better than to take Tonga lightly this Friday night as they look to avoid being the victims of another Pacific Islanders scalping.

Last year, Samoa humiliated their hosts yet again at the Millennium Stadium, deserved 26-19 winners as they emulated the World Cup sides of 1991 and 1999 who came, saw and conquered in Cardiff.

Wales were lucky to escape with a draw in 2010 when Fiji came to town, the visitors also desperately unfortunate to lose out 11-10 in 2005 and the less said about the 2007 World Cup, the better.

Tonga have never beaten Wales, losing six out of six, although they have pushed them close, most notably in the last encounter which took place at the 2003 World Cup, Colin Charvis’ side triumphing 27-20 in Canberra.

But they do have form when it comes to upsetting European teams, ask France who went down to them 19-14 at the 2011 World Cup and Scotland were humbled 21-15 in Aberdeen last year, a devastating defeat which saw coach Andy Robinson resign.

They did go down to a heavy 38-18 defeat to the French on the weekend in an ill-tempered match in Le Havre and will be looking to do far better against Six Nations champions Wales.

On being asked by journalists after Wales’ 40-6 record win over Argentina, their first victory in a November clash since 2009, if he was wary of Tonga, Wyn Jones replied: “You are the guys who kept reminding us that we hadn't won in the autumn since 2009. You remind us that we've drawn with Fiji and lost to Samoa.

“Yes. Pacific Island teams have bitten us on the backside in the past and I'm sure Tonga will look to do the same.”

On the success over the Pumas, the lock, who won his 72nd cap in that game, he said it was good to bounce back from last week’s defeat to the Springboks: “It is nice to get the win. Argentina have the potential to play the same way as South Africa, with a strong set-piece, driving line-out and kicking game. We worked on those areas and it went quite well.”

Wyn Jones, who captained the British and Irish Lions to their third Test victory over Australia in July to seal the series 2-1, believes Wales have the potential to be a ruthless outfit.

“Against South Africa we had four or five line-breaks and didn't convert any,” he said

“This week we made a few more clean breaks and the completion rate was much higher. The boys were supporting and getting in the positions. A bit more work on that and we'll become even more clinical.”