Lacuna Coil is an Italian Goth rock band formed by Cristina Scabbia (vocals), Marco Coti Zelati (bass), Andrea Ferro (vocals), Cristiano Migliore (guitars), Marco Emanuele Biazzi (guitars), and Cristiano Mozzati (drums).
Evanescence are likened to Lacuna Coil and some people beleive that Evanescence copied Lacuna Coil's sound but both band were formed in 1994 released their first EP's in 1998 and do not sound all that similar.
The band formed as Sleep of Right in 1994. By 1996 the band had changed their name to Ethereal and were signed by Century Media. Finding that the name "Ethereal" was taken, they settled instead on Lacuna Coil ("empty spiral" in Italian).
Lacuna Coil definition by Urban Dictionary