Enterion tetraedrum Savigny, 1826
Helodrilus tetraedrus (Savigny, 1826)
Allurus tetraedrus (Savigny, 1826)
Allurus neapolitanus Orley, 1885
Allurus hercynius Michaelsen, 1890
Allolobophora ninnii Rosa, 1886
Tetragonurus pupa Eisen, 1874
Etymology
Species name means "four-square" in Greek, referring to the body shape.