With Holmes slotting seamlessly into fullback, Teneti, clearly hungry for the ball, enjoyed more clean possession and space to move.
Despite the Ferns being reduced to 13 when No.8 Liana Mikaele-Tu’u was sinbinned for repeated infringements by New Zealand, they began to assert dominance.
Teneti and Holmes were involved in combination in one of their five second-half tries — Holmes countering from a kick, sending the ball wide to Teneti who broke through, drew the last defender and offloaded for halfback Arihiana Marino-Tauhinu to run the last 10 metres to score.
The Black Ferns outscored the Americans 34-0 in the second half to claim the series following wins over Australia and Canada, who thumped Australia 45-7 to secure second.
Holmes kicked three conversions and a penalty.
The Black Ferns’ next game is the second test of the Laurie O’Reilly Cup against Australia. They then take part in the inaugural World Rugby XV three-tier competition.
New Zealand are in the top tier featuring the top three teams from the Pacific Four Series and top three from the Women’s Six Nations.
Tier 1 is being held in New Zealand on October 21, 28 and November 4.