Murray scolds mum for 'Deliciano' antics
Spanish heartthrob Lopez, 28, is one of the more popular players with female tennis fans, leading Judy Murray to give him the nickname on Twitter.
The Scot, known as much for his dour demeanour as his strong defensive game, was not amused.
"I think it's about time she stopped that nonsense. Makes me want to throw up. It's disgusting," said Murray, who could meet Lopez in the quarter-finals.
"I was practicing with him before the tournament and my mum was on the side. I shouted across the net, I said, 'Feli, if we sit down for a drink, could you take a picture with my mum, because she thinks you're beautiful?'
"She went bright red. Refused to take the picture. Quite funny. Not like her."