A man posing as a livery driver was arrested for allegedly sodomizing a Manhattan woman who fell asleep in his black SUV after he picked her up outside a Brooklyn nightclub, authorities said yesterday.

Miguel Galan, 32, picked up the 22-year-old woman hailing a taxi outside the Sky Lounge on 65th Street and Bay Parkway in Bensonhurst at about 5 a.m. Saturday, sources said.

The woman fell asleep and was awakened by her cellphone only to discover the car had pulled over in DUMBO and Galan was molesting her, sources said.

After the woman fought him off, he drove to lower Manhattan, where he forced her out. She called cops with a partial plate number that led to Galan’s arrest, sources said.