Serp i posted something on them a little while back. Scarfo supposedly has two relatives in this group. From a 1982 article on Scarfo.

THE SCARFO STORY 'LITTLE NICKY': MAKING OF A MOBSTER
Philadelphia Daily News (PA) - Tuesday, September 7, 1982
Author: KATHY SHEEHAN

"An organized crime investigator in New York could not confirm Philip Scarfo's ties with the mob there, but said two other relatives, Frank Scarfo and Pasqualino Scarfo, were members of New York's Sardeno group, an organized crime unit that started in Calabria, Italy, and deals in narcotics."

The article got the name wrong, it's actually the Siderno Group aka Siderno Clan aka The Siderno Cartel.