‘Thug’ takes bite out of train rider

The city’s latest subway crimes include a teen being bitten and stabbed by a baby-faced suspect when the victim confronted a group of people vaping on a Brooklyn platform, cops say.

Another man also was menaced with a knife for possibly including the wrong man in a photo he was taking on a Queens train, a 70-year-old man got bashed on the head with an umbrella during a fight in a subway elevator on the Upper East Side, and another victim randomly had his nose broken on a train in Brooklyn, police sources said Monday.

The bitten 19-year-old victim was waiting for a C train at Pennsylvania Avenue in East New York around 2:45 p.m. Wednesday when he clashed with six people vaping nearby, officials said.

The young-looking suspect, shown in surveillance images (inset) released by the NYPD, then knifed the victim in the torso and bit him on the arm, cops said.

Around 2 p.m. Sunday at the Court Square station in Queens, a 17-year-old menace threatened a 33-yearold straphanger with a knife on a G train because the suspect thought the rider took a photo that included him, police sources said. The suspect was apprehended.

At 3:15 p.m. on the No. 2 line at the Nevins Street station in Brooklyn, a 60-yearold man was smacked in the face by a brute in his 30s in an unprovoked attack, police sources said. The maniac then followed him from the train and punched him multiple times again before jumping on a northbound No. 4 train to get away. X-rays revealed the victim suffered a broken nose and cheekbone.

About 15 minutes after that attack, a 70-year-old man was hit in the head with an umbrella during a dispute on an elevator in the 86th Street/Lexington Avenue station on the Upper East Side in Manhattan.

Eutano Bernard, 40, struck him during a dispute, the sources said. It wasn’t clear what the tiff was about. Bernard was arrested and charged with second-degree assault.