OpenGate Capital, the Los Angeles private equity firm that bought TV Guide magazine last fall, said Monday it had a definitive agreement to acquire two youth publication divisions of French media giant Groupe Le Monde.

The acquisition of Paris-based Fleurus Presse and Junior Hebdo is the third industry transaction that OpenGate has completed since expanding its focus into the media and entertainment industries less than a year ago.

Financial terms were not disclosed, but OpenGate said it would be partnering with French media industry veteran Jean-Martial Lefranc, who will serve as chief executive of the acquired companies.

Fleurus Presse has been publishing magazines for children and young teen-agers for more than 50 years. Junior Hebdo also is a leading publisher of children’s magazines. OpenGate plans to increase the publications’ Internet presence and pursue licensing opportunities.

“OpenGate is executing on our strategy to buy and build media and entertainment companies with untapped potential,” said Andrew Nikou, OpenGate’s founder and managing partner.