HKRMS Taxon list
Actinocyclus alienus Grunow in Cleve, 1883 (uncertain > unassessed )
Actinocyclus ehrenbergii Ralfs, 1861
Actinocyclus ingens Rattray, 1890 † (uncertain > unassessed )
Actinocyclus ingens var. ovalis R.Gersonde, 1990 (uncertain > unassessed )
Actinocyclus kützingii (A.Schmidt) Simonsen
Actinocyclus octonarius Ehrenberg, 1837 accepted as Actinoptychus octonarius (Ehrenberg) Kützing, 1844 accepted as Actinocyclus octonarius var. octonarius Ehrenberg, 1837
Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (uncertain > unassessed )
Actinocyclus octonarius var. tenellus (Brébisson) Hendey, 1954 accepted as Eupodiscus tenellus Brébisson, 1854
Actinocyclus senarius Ehrenberg, 1838 (uncertain > unassessed )
Charcotiella grunowii S.Blanco & C.E.Wetzel, 2016
Hemidiscus ovalis (R.Gersonde) D.M.Harwood & T.Maruyama, 1992 accepted as Actinocyclus ingens var. ovalis R.Gersonde, 1990
Roperia tesselata (Roper) Grunow ex Pelletan, 1889