c) C. regalis species group Häckel 2017 (4 species)

C. bouvieri bouvieri Rousseau, 1905 . Central Cameroon, Central African Republic, Congo.

C. bouvieri iturianus Basilewsky, 1956 . DR Congo: Orientale Province .

C. imperialis imperialis Burgeon, 1930 . Benin, Burkina Faso, Ghana, Ivory Coast, Togo.

C. imperialis dux Basilewsky, 1951 . Northern Cameroon.

C. regalis regalis (Gory, 1833), as Panagaeus . Northern, central Guinea, Guinea-Bissau, Senegal.

C. regalis sayersii (Hope, 1842), as Panagaeus . Ghana, south-eastern Guinea, Ivory Coast, Liberia, Togo.

C. unicolor Chaudoir, 1879 . Angola, Lunda Norte Province; DR Congo: Katanga, Maniema Provinces; Malawi, Mozambique: Sofala Province; Tanzania: Kigoma, Lindi, Morogoro, Ruvuma, Singida, Tabora, Zanzibar Island; Zambia, Zimbabwe.