"I wanted them to understand that this was the beginning of our third season," coach Geno Auriemma said. "Let's put everything behind us. And I think we did."
Mosqueda-Lewis finished with 22 points, all in the first half. Morgan Tuck had 18, Moriah Jefferson chipped in 16, and Kiah Stokes scored 14 points and grabbed 11 rebounds.
The Huskies (30-4) advanced to the second round for the 20th straight time in their 25th consecutive tournament appearance.
UConn led by as many as 74 in the second half before Idaho made five 3-pointers in the last 4 minutes, four by Barr.
No. 8 Vanderbilt 60, No. 9 Saint Joseph's 54 • In Storrs, Conn., Tiffany Clarke had 16 points and 12 rebounds to lead Vanderbilt over Saint Joseph's in the first round of the NCAA women's basketball tournament.
No. 4 Maryland 72, No. 13 Quinnipiac 52 • In College Park, Md., Alyssa Thomas had 29 points and 13 rebounds, and Maryland spoiled Quinnipiac's debut in the NCAA women's tournament.
No. 5 Michigan State 55, No. 12 Marist 47 • In College Park, Md., Kiana Johnson scored 16 points, Annalise Pickrel added 14 and Michigan State halted Marist's string of first-round NCAA upsets.
No. 3 Texas A&M 71, Wichita State 45 • In College Station, Texas, Kristi Bellock tied a career high with 18 points and Texas A&M routed Wichita State. Playing in front of a hometown crowd, the Aggies used a big run at the end of the first half to erase a one-point deficit and take a 13-point lead into halftime.
No. 5 Nebraska 73, No. 11 Chattanooga 59 • In College Station, Texas, Jordan Hooper made four 3-pointers in the second half and finished with 21 points, helping Nebraska rally from nine points down to beat Chattanooga.
No. 4 South Carolina 74, No. 13 South Dakota State 52 • In Boulder, Colo., Ashley Brunner had 15 points and 11 rebounds to lead South Carolina to a victory over South Dakota State.
No. 12 Kansas 67, No. 5 Colorado 52 • In Boulder, Colo., Angel Goodrich and Carolyn Davis each scored 14 points and 12th-seeded Kansas upset No. 5 seed Colorado on the Buffaloes' home floor.