• Acaena Mutis ex Linnaeus, 1771 [Family: Rosaceae]
• Acaena Treitschke, 1825 (uncertain) [Family: Lepidoptera (awaiting allocation)]
• Achena Paetel, 1875 accepted as Acicula Risso, 1826
• Acmena A.P. de Candolle, 1828 accepted as Syzygium J. Gaertner, 1788
• Actena Dejean, 1836 accepted as Actenoncus de Chaudoir, 1871
• Advena Gude, 1913 [Family: Helicarionidae]
• Advena Kabata, 1979 accepted as Kabatazus Özdikmen, 2008 [Family: Lernaeopodidae]
• Advena Palmer, 1937 † (uncertain) [Family: Mollusca (awaiting allocation)]
• Afrena Hampson, 1895 (uncertain)
• Aglena Amyot & Serville, 1843 (uncertain)
• Alaena Boisduval in Delegorgue, 1847
• Aldena Paetel, 1875 (unaccepted)
• Aliena Betekhtina, 1998 † [Family: Prokopievskiidae]
• Aliena Breedy, McFadden & Cortés, 2023 [Family: Pterogorgiidae]
• Aliena Key, 1976 [Family: Morabidae]
• Aligena H. C. Lea, 1843
• Amoena Stichel in Seitz, 1909 (uncertain)
• Apsena Leconte, 1862
• Arduena Mote, 1914 accepted as Ascarops van Beneden, 1873
• Arena Fauvel, 1862 [Family: Staphylinidae]
• Arena Mulsant & Verreaux, 1878 (uncertain) [Family: Aves (awaiting allocation)]
• Argala Brown, 1832 (uncertain) [Family: Ciconiidae]
• Argala Hodgson, 1838 (uncertain) [Family: Aves (awaiting allocation)]
• Argania Druce, 1891 [Family: Noctuidae]
• Argania J.J. Roemer & J.A. Schultes, 1819 [Family: Sapotaceae]
• Argeia Dana, 1853
• Argelia Decaisne, 1838 accepted as Solenostemma Hayne, 1825
• Argella Menakova & Nikiforova, 1986 †
• Argema Wallengren, 1858
• Argemma Grishin, 2019
• Argenia Malaise, 1950 (uncertain)
• Argenis Distant, 1904 (uncertain)
• Argenna Thorell, 1870
• Argeta N.E. Brown, 1927 accepted as Gibbaeum A.H. Haworth ex N.E. Brown, 1922
• Argeus Hübner, 1819 (uncertain)
• Argila Walker, 1855 (uncertain)
• Argina Forsius, 1925 (uncertain) [Family: Hymenoptera (awaiting allocation)]
• Argina Gray, 1840 (unaccepted > nomen nudum) [Family: Arcidae]
• Argina Gray, 1842 accepted as Lunarca Gray, 1842 [Family: Arcidae]
• Argina Hübner, 1819 [Family: Erebidae]
• Argiva Hübner, 1823 (uncertain)
• Arglina Khairullina, 1970 † (uncertain)
• Argna Cossmann, 1889
• Arguda Moore in Hewitson & Moore, 1879
• Argusa Emeljanov, 1999 (uncertain) [Family: Cicadellidae]
• Argusa Kelham, 1881 accepted as Argusianus Rafinesque, 1815 [Family: Phasianidae]
• Arguta Lucas, 1846 accepted as Pterostichus Bonelli, 1810
• Argynna A.P. Morgan, 1895
• Argyra F. Noroña ex H.E. Baillon, 1861 accepted as Croton Linnaeus, 1753 [Family: Euphorbiaceae]
• Argyra Macquart, 1834 [Family: Dolichopodidae]
• Armigena Bouchard & Bousquet in Bouchard et al., 2021 accepted as Nesogena Mäklin, 1863
• Armigena Froussart, 1961 accepted as Armigena Bouchard & Bousquet in Bouchard et al., 2021 accepted as Nesogena Mäklin, 1863
• Artena Conrad, 1870 (uncertain) [Family: Veneridae]
• Artena Walker, 1858 [Family: Noctuidae]
• Arunena Swinhoe, 1919 accepted as Koruthaialos Watson, 1893
• Arytena Schweigger, 1820 (unaccepted)
• Asagena Sundevall, 1833 accepted as Steatoda Sundevall, 1833
• Asmena Gistl, 1848 † accepted as Melanopsis Férussac in Férussac & Férussac, 1807
• Astena Baly, 1865
• Atagena Benham, 1905 accepted as Atagema Gray, 1850
• Athena Gray, 1844 accepted as Athene Boie, 1822 [Family: Strigidae]
• Athena Hübner, 1819 (uncertain) [Family: Lepidoptera (awaiting allocation)]
• Aukena Baker, 1940
• Aulena Lendenfeld, 1886 accepted as Dysidea Johnston, 1842
• Aurigena Laporte & Gory, 1838 accepted as Perotis Dejean, 1833
• Bargena Koenike, 1893 accepted as Hydrachna Müller, 1776