In synonymy:
Adranochelia Simon, 1889 = Cyclosternum Ausserer, 1871 (Raven, 1985a: 148)
Chaetorhombus Ausserer, 1871 = Cyclosternum Ausserer, 1871 (Raven, 1985a: 151)
Dryptopelma Simon, 1889 = Cyclosternum Ausserer, 1871 (Pérez-Miles et al., 1996: 46)
Transferred to other genera:
Cyclosternum bicolor (Schiapelli & Gerschman, 1945) -- see Cyriocosmus
Cyclosternum chickeringi (Caporiacco, 1955) -- see Tmesiphantes
Cyclosternum crassifemur (Gerschman & Schiapelli, 1960) -- see Melloleitaoina
Cyclosternum fasciatum (O. Pickard-Cambridge, 1892) -- see Davus
Cyclosternum hirsutum (Mello-Leitão, 1935) -- see Homoeomma
Cyclosternum ischnoculiforme Franganillo, 1926 -- see Cyrtopholis
Cyclosternum janeirum (Keyserling, 1891) -- see Magulla
Cyclosternum longipes (Schiapelli & Gerschman, 1945) -- see Holothele
Cyclosternum macropus (Ausserer, 1875) -- see Pseudoschizopelma
Cyclosternum majus Franganillo, 1926 -- see Cyrtopholis
Cyclosternum melloleitaoi Bücherl, Timotheo & Lucas, 1971 -- see Crypsidromus
Cyclosternum minensis (Mello-Leitão, 1943) -- see Plesiopelma
Cyclosternum multicuspidatum (Mello-Leitão, 1929) -- see Crypsidromus
Cyclosternum nubilum (Simon, 1892) -- see Tmesiphantes
Cyclosternum obesum (Simon, 1892) -- see Magulla
Cyclosternum obscurum Simon, 1891 -- see Bonnetina
Cyclosternum pentalore (Simon, 1888) -- see Davus
Cyclosternum physopus (Mello-Leitão, 1926) -- see Tmesiphantes
Cyclosternum rondoni (Lucas & Bücherl, 1972) -- see Holothele
Cyclosternum semiaurantiacum Simon, 1897 -- see Plesiopelma
Cyclosternum serratum (Gerschman & Schiapelli, 1958) -- see Homoeomma
Cyclosternum stylipum Valerio, 1982 -- see Stichoplastoris
Cyclosternum symmetricum (Bücherl, 1949) -- see Plesiopelma
Nomen dubium:
Cyclosternum pulcherrimaklaasi (Schmidt, 1991d: 8, f. 1, 3-4, m, Ecuador, originally in Paraphysa; not f = Euathlus truculentus) -- Gabriel & Sherwood, 2020a: 303