Brute said his 49-year-old victim chased him to the top of the road ladder on Feb. 12 at 5:45 a.m. at the Morrison-Soundview Avenue No. 6 train station.
The police spokesman said he punched his victim for work at the time, biting his face with his right cheek and biting the back of his neck.
The attacker fled in an unknown direction while the victim ran out of the station into a police vehicle.
EMS took her to Jacobi Medical Center for treatment. Police released surveillance pictures of the attacker.
Recently there has been an increase in violent crime in subway stations.
A mentally ill homeless man climbed a mob earlier this month, stabbing and killing four people, two of whom died on the train.