A bicyclist died after an ambulance struck him Monday night in Staten Island’s Graniteville neighborhood. Police said the ambulance was turning left from Richmond Avenue onto Christopher Lane around 10:30 p.m. The cyclist was riding against traffic, heading south on the northbound side of Richmond Avenue. He was thrown onto the roadway and suffered head and body trauma. He was pronounced dead at Richmond University Medical Center in West Brighton. The driver remained at the scene. No arrests have been made.