Genus: Helocassis Spaeth, 1952
Helocassis Spaeth in Hincks, 1952: 349 (type species: Coptocycla flexuosa Boheman, 1855, by monotypy); Hincks, 1952: 342; Seeno and Wilcox, 1982: 179; Borowiec, 1999 d: 375.
Species (8, species with colour photos marked with an asterisk):