In the wake of its editorial in favor of gay marriage, Sen. Ruben Diaz is calling for a boycott of the influential Spanish-language newspaper “El Diario.”

In a letter to the newspaper’s parent company CEO Monica Lozano, the Bronx Democrat said he would call for the boycott at his May 15 rally for “traditional” marriage.

Diaz, one of the most outspoken opponents of gay marriage in the Senate, writes in the letter that he is informing Lozano of the boycott plans “as a mere courtesy.”

The El Diario editorial in favor of same-sex marriage this week caught many by surprise. It comes as Gov. Andrew Cuomo and a coalition of pro-gay marriage advocacy groups, along with business community officials, push the issue.

Monica Cl Lozano169-1