LONDON (Reuters) - Equatorial Guinea has now applied to join the Organization of the Petroleum Exporting Countries, an OPEC source familiar with the matter said on Monday, which would bring the oil producer group's membership to 14 countries.

The African nation, which said earlier that it was seeking to join OPEC, is one of the non-member producers that has agreed to cut output in the first half of 2017 alongside OPEC in an effort to boost oil prices.

(This version of the story corrects second paragraph to read "said earlier" instead of "said earlier this month")

(Reporting by Alex Lawler; Editing by Greg Mahlich)