McArthur was booked early in the second half at the Britannia Stadium on Saturday after taking a clear dive in the area in a bid to win a penalty.
And Pardew told Sky Sports’ Goals on Sunday that he wasn’t happy with the Scotland international’s actions.
“He dived. He should be embarrassed,” Pardew said.
“He’s a great professional and that’s unlike him. I was surprised but it shows what pressure does to players.
“I haven’t spoken to him about it but I don’t need to. He will see the replay and he will be embarrassed.”