Regular Premier League ref Mason waved away a strong first-half penalty appeal from Bournemouth before he disallowed a goal which occurred in bizarre fashion 73rd minute of the encounter.
However, Mason disallowed the goal instead showing a yellow card to Wilson, which infuriated Howe.
Howe said: "You'll have to ask the referee why the goal was not allowed, I don't think he had a particularly good game and that's an understatement.
"Callum was looking the other way, he stood his ground which is allowed and the goalkeeper has kicked it at his back.
"That's a real strange decision and ultimately it's cost us two points.
"In my view, it was a penalty in the first-half, that's my honest opinion having looked at it."
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