Genus: Rhoia Spaeth, 1913
Rhoia Spaeth, 1913 b: 144 (type species: Rhoia clavareaui Spaeth, 1913, by monotypy), 1914 g: 122; Hincks, 1952: 340; Seeno and Wilcox, 1982: 178; Borowiec, 1999 d: 411.
Species (2, species with colour photos marked with an asterisk):