"Terina played exceptionally well as an 18-year-old for Waikato over the weekend at the nationals. We also have Janna Vaughan, who we've had on our radar for the past 12 months. She brings a real physicality to a centre role. She's aggressive and abrasive and we need that."
Vaughan debuted for the Black Ferns in 2015.
With Tamaki, there are now four sibling pairings across both national sevens teams - Jordon and Joe Webber, Niall and Sonny Bill Williams, Stacey and Beaudein Waaka are the other pairings.
Huriana Manuel and Selica Winiata (captain of Manawatu's champion side) return after long injury breaks.
"They bring some quality depth to us. Huriana has that "honey badger" approach - that's being tough and resilient in the contact area. Her tackle quality and decision-making in that close-quarter stuff is something we've been missing."
The New Zealand Women's Sevens team next plays at the Sao Paulo Sevens tournament on February 20-21. They finished fifth in the opening tournament of the World Series in Dubai and will be looking for a sharp improvement in Brazil.
The team departs for a training camp in Florida in early February where they will also be based prior to the Olympic Games. The players will then spend two days in Rio de Janiero to familiarise themselves with the Olympic host city before travelling to Sao Paulo.
"It's a bit of a dry run," said Horan. "We want to see how the facilities are, see how we travel and how we deal with the heat. We want to see what sort of obstacles we may come across so it's a bit of a dress rehearsal really.
"We didn't like coming fifth in Dubai, but there were some successes there. We learnt a lot. You just can't take your finger off the pulse at any stage because if you do, the likes of Russia and the USA will put you to the sword. So in Sao Paulo, we want good game time for these players in the heat. We do want to win, but if we can tick a lot of boxes for where we are heading this year then that's the priority."
New Zealand Women's 7s for 2016: Shakira Baker, Honey Hireme, Carla Hohepa, Lesley Ketu, Terina Te Tamaki *, Stacey Waaka, Jordon Webber (all Waikato), Michaela Blyde, Sarah Goss, Janna Vaughan *, Selica Winiata (Manawatu), Huriana Manuel, Kayla McAlister, Tyla Nathan-Wong, Niall Williams (Auckland), Hazel Tubic, Portia Woodman (Counties Manukau), Kelly Brazier (Bay of Plenty), Gayle Broughton (Taranaki), Shiray Tane (Hawke's Bay), Ruby Tui (Canterbury), Kat Whata-Simpkins (Wellington)
