Cyclops Müller O.F., 1785 (additional source)
Cyclops abyssicola Lilljeborg, 1901 accepted as Diacyclops abyssicola (Lilljeborg, 1901) (original description)
Cyclops aequoreus Fischer, 1860 accepted as Halicyclops aequoreus aequoreus (Fischer, 1860) (additional source)
Cyclops affinis Sars G.O., 1863 accepted as Paracyclops affinis (Sars G.O., 1863) (additional source)
Cyclops albidus (Jurine, 1820) accepted as Macrocyclops albidus (Jurine, 1820) represented as Macrocyclops albidus albidus (Jurine, 1820) (additional source)
Cyclops annulicornis Koch, 1838 accepted as Cyclops albidus (Jurine, 1820) accepted as Macrocyclops albidus (Jurine, 1820) represented as Macrocyclops albidus albidus (Jurine, 1820) (source of synonymy)
Cyclops bicolor Sars G.O., 1863 represented as Cryptocyclops bicolor (Sars G.O., 1863) (additional source)
Cyclops bisetosus Rehberg, 1880 accepted as Acanthocyclops bisetosus (Rehberg, 1880) accepted as Diacyclops bisetosus (Rehberg, 1880) (additional source)
Cyclops capillatus Sars G.O., 1863 accepted as Acanthocyclops capillatus (Sars G.O., 1863) (additional source)
Cyclops crassus Fischer, 1853 accepted as Mesocyclops crassus (Fischer, 1853) accepted as Thermocyclops crassus (Fischer, 1853) accepted as Thermocyclops crassus crassus (Fischer, 1853) (additional source)
Cyclops diaphanus Fischer, 1853 accepted as Microcyclops diaphanus (Fischer, 1853) (additional source)
Cyclops distinctus Richard, 1887 accepted as Macrocyclops distinctus (Richard, 1887) (additional source)
Cyclops fimbriatus Fischer, 1853 accepted as Paracyclops fimbriatus (Fischer, 1853) represented as Paracyclops fimbriatus fimbriatus (Fischer, 1853) (additional source)
Cyclops fuscus (Jurine, 1820) accepted as Macrocyclops fuscus (Jurine, 1820) (additional source)
Cyclops gigas Claus, 1857 accepted as Megacyclops gigas (Claus, 1857) represented as Megacyclops gigas gigas (Claus, 1857) (additional source)
Cyclops gracilis Lilljeborg, 1853 accepted as Metacyclops gracilis (Lilljeborg, 1853) represented as Metacyclops gracilis gracilis (Lilljeborg, 1853) (additional source)
Cyclops hyalinus Rehberg, 1880 accepted as Mesocyclops hyalinus (Rehberg, 1880) accepted as Thermocyclops hyalinus (Rehberg, 1880) represented as Thermocyclops hyalinus hyalinus (Rehberg, 1880) (additional source)
Cyclops insignis Claus, 1857 (additional source)
Cyclops kolensis Lilljeborg, 1901 represented as Cyclops kolensis kolensis Lilljeborg, 1901 (additional source)
Cyclops languidoides Lilljeborg, 1901 accepted as Acanthocyclops languidoides (Lilljeborg, 1901) accepted as Diacyclops languidoides (Lilljeborg, 1901) represented as Diacyclops languidoides languidoides (Lilljeborg, 1901) (original description)
Cyclops languidus Sars G.O., 1863 accepted as Acanthocyclops languidus (Sars G.O., 1863) accepted as Diacyclops languidus (Sars G.O., 1863) represented as Diacyclops languidus languidus (Sars G.O., 1863) (additional source)
Cyclops leuckarti Claus, 1857 accepted as Mesocyclops leuckarti (Claus, 1857) represented as Mesocyclops (Mesocyclops) leuckarti (Claus, 1857) represented as Mesocyclops (Mesocyclops) leuckarti leuckarti (Claus, 1857) (additional source)
Cyclops macruroides Lilljeborg, 1901 accepted as Eucyclops macruroides (Lilljeborg, 1901) represented as Eucyclops macruroides macruroides (Lilljeborg, 1901) represented as Eucyclops (Denticyclops) macruroides (Lilljeborg, 1901) (original description)
Cyclops macrurus Sars G.O., 1863 accepted as Eucyclops macrurus (Sars G.O., 1863) represented as Eucyclops macrurus macrurus (Sars G.O., 1863) represented as Eucyclops (Macrurocyclops) macrurus (Sars G.O., 1863) (additional source)
Cyclops miniatus Lilljeborg, 1901 accepted as Cyclops furcifer Claus, 1857 represented as Cyclops furcifer furcifer Claus, 1857 (additional source)
Cyclops miniatus Lilljeborg, 1901 accepted as Cyclops furcifer Claus, 1857 represented as Cyclops furcifer furcifer Claus, 1857 (original description)
Cyclops oithonoides Sars G.O., 1863 represented as Cyclops oithonoides oithonoides Sars G.O., 1863 accepted as Mesocyclops oithonoides (Sars G.O., 1863) accepted as Thermocyclops oithonoides (Sars G.O., 1863) (additional source)
Cyclops phaleratus Koch, 1838 accepted as Ectocyclops phaleratus (Koch, 1838) (additional source)
Cyclops robustus Sars G.O., 1863 accepted as Acanthocyclops robustus (Sars G.O., 1863) represented as Acanthocyclops robustus robustus (Sars G.O., 1863) (additional source)
Cyclops rubellus Lilljeborg, 1901 accepted as Microcyclops rubellus (Lilljeborg, 1901) (original description)
Cyclops scutifer Sars G.O., 1863 represented as Cyclops scutifer scutifer Sars G.O., 1863 (additional source)
Cyclops serrulatus Fischer, 1851 accepted as Eucyclops serrulatus (Fischer, 1851) represented as Eucyclops serrulatus serrulatus (Fischer, 1851) (additional source)
Cyclops serrulatus speratus Lilljeborg, 1901 accepted as Cyclops speratus Lilljeborg, 1901 accepted as Eucyclops speratus (Lilljeborg, 1901) represented as Eucyclops speratus speratus (Lilljeborg, 1901) represented as Eucyclops (Speratocyclops) speratus (Lilljeborg, 1901) (original description)
Cyclops strenuus Fischer, 1851 represented as Cyclops strenuus strenuus Fischer, 1851 (additional source)
Cyclops varicans Sars G.O., 1863 accepted as Microcyclops varicans (Sars G.O., 1863) represented as Microcyclops varicans varicans (Sars G.O., 1863) (additional source)
Cyclops varius Lilljeborg, 1901 represented as Cyclops varius varius Lilljeborg, 1901 (original description)
Cyclops varius brachyurus Lilljeborg, 1901 accepted as Leptocyclops agilis (Koch, 1838) accepted as Eucyclops agilis (Koch, 1838) represented as Eucyclops agilis agilis (Koch, 1838) (original description)
Cyclops varius proximus Lilljeborg, 1901 (original description)
Cyclops varius speratus Lilljeborg, 1901 represented as Cyclops speratus Lilljeborg, 1901 accepted as Eucyclops speratus (Lilljeborg, 1901) represented as Eucyclops speratus speratus (Lilljeborg, 1901) represented as Eucyclops (Speratocyclops) speratus (Lilljeborg, 1901) (original description)
Cyclops vernalis Fischer, 1853 represented as Cyclops vernalis vernalis Fischer, 1853 accepted as Acanthocyclops vernalis vernalis (Fischer, 1853) (additional source)
Cyclops vicinus Uljanin, 1875 represented as Cyclops vicinus vicinus Uljanin, 1875 (additional source)
Cyclops viridis Jurine, 1820 represented as Cyclops viridis viridis (Jurine, 1820) (additional source)
Eucyclops (Denticyclops) macruroides (Lilljeborg, 1901) (basis of record)
Eucyclops macruroides (Lilljeborg, 1901) represented as Eucyclops macruroides macruroides (Lilljeborg, 1901) represented as Eucyclops (Denticyclops) macruroides (Lilljeborg, 1901) (original description)