A veteran MTA station agent was busted in Queens after a rider caught him pleasuring himself in the subway booth, officials said.

Harold Sisselman, 51, was allegedly spotted in the lewd act by a man who wanted directions at the 61st street station in Woodside about 10:50 p.m. Tuesday.

He called the cops, and Sisselman was taken into custody.

The agent was charged with public lewdness early Wednesday, according to cops

An MTA spokeswoman said he has been suspended without pay.

Sisselman has worked for the MTA since July 1992.