Barry rescues point for flat Villa
Stewart Downing had given the visitors a deserved half-time lead with his seventh goal of the season as Boro regained their pride after the FA Cup debacle against Cardiff at the weekend.
Southgate was given the perfect reponse by his players to that shock cup reversal and Boro could have wrapped the game up with steadier finishing before the Barry spot-kick.
Downing caused constant problems down the left flank while skipper Emanuel Pogatetz was a solid performer at the back.
Villa seldom fired on all cylinders and are now seven points adrift of fifth-placed Everton.