A former AIG underwriter is suing the insurance giant and her ex-boss, claiming the exec perpetuated a “boys club” atmosphere — which included male employees hiding under women’s desks to peek up their skirts, and licking female colleagues.

Marlee Valenti had been an award-winning employee for two years before she was transferred to work under now-Vice President Michael Donnelly, according to her suit, filed Monday in Manhattan Supreme Court.

She then became subject to a “never-ending stream” of harassment from 10 men under Donnelly’s supervision, court papers allege.

“Male employees would sneak under the desks of female employees in order to look up their skirts,” the suit reads.

Valenti and other women were also “groped, licked or forced to endure other forms of harassment” from male colleagues, she says. Valenti was fired after she complained, the suit says.

“We believe this suit and the claims it makes are without merit,” an AIG spokesman said.

Donnelly did not return messages seeking comment.