AUGUSTA — A Maine ethics board fined a conservative lobbyist $50 for violating a little-known law requiring lobbyists to identify the group they’re working for when testifying before a legislative committee.

The case of Joel Allumbaugh is the first time that the Maine Ethics Commission has examined a 2006 statute requiring lobbyists to identify the group they’re representing when testifying before a legislative committee.

Two Democratic legislators complained to the commission in September, saying that Allumbaugh testified in favor of a bill in May without mentioning that he was registered as a lobbyist for the Foundation for Government Accountability, a conservative think tank in Florida that backs the bill. He was paid more than $4,800 to lobby for the group in 2015.

Allumbaugh is a well-known conservative voice on health insurance in Maine who served as health care policy director for the Maine Heritage Policy Center, a conservative advocacy group.

There are links between that group and the Foundation for Governmental Accountability, which is run by Tarren Bragdon, a former Republican state legislator from Bangor who helmed the Maine group from 2008 to 2011 and co-chaired Gov. Paul LePage’s transition team after his 2010 election.

Jonathan Wayne, the commission’s executive director, told the commission that there is “sufficient evidence” that Allumbaugh broke that law.

However, he didn’t recommend any specific kind of penalty, calling it a statute that his office has “never really been called on to investigate,” and Walter McKee, the commission’s chairman, said the fine was “nominal.”