IRMNG Taxon list
Bargena mirifica Koenike, 1893 accepted as Hydrachna mirifica (Koenike, 1893)
Hydrachna abstergens Müller, 1781 accepted as Arrenurus papillator (Müller, 1776)
Hydrachna acutula Koenike, 1895
Hydrachna aequalis Thor, 1916 accepted as Hydrachna globosa (DeGeer, 1778)
Hydrachna agilis Gervais, 1849
Hydrachna albator Müller, 1776 accepted as Arrenurus albator (Müller, 1776)
Hydrachna albatrix Schrank, 1803 accepted as Arrenurus albator (Müller, 1776)
Hydrachna amplexa Koenike, 1898
Hydrachna analis Viets, 1935
Hydrachna approximata Halik, 1940
Hydrachna aspratilis Koenike, 1897
Hydrachna atrata Croneberg, 1899 accepted as Hydrachna leegei Koenike
Hydrachna australica Lundblad, 1941
Hydrachna baculoscutata Crowell, 1960
Hydrachna barri Smith, 1987
Hydrachna belostomae Riley, 1878
Hydrachna bilobata Halik, 1940
Hydrachna bilunata Marshall, 1931 accepted as Hydrachna miliaria Berlese, 1888
Hydrachna bimaculata Koenike, 1908 accepted as Hydrachna processifera Koenike, 1903
Hydrachna binominata Thor, 1899 accepted as Hydrachna cruenta Muller, 1776
Hydrachna bipilus Jin, 1997
Hydrachna bipunctata Schrank, 1787 accepted as Limnesia bipunctata (Schrank, 1787)
Hydrachna biscutata Thor, 1897 accepted as Hydrachna cruenta Muller, 1776
Hydrachna bisignifera Viets, 1913
Hydrachna bivirgulata Piersig, 1897
Hydrachna boops Schrank, 1803 accepted as Hydrachna mutabilis Schrank, 1803
Hydrachna brasiliensis Viets, 1933 accepted as Hydrachna miliaria Berlese, 1888
Hydrachna brehmi Szalay, 1955
Hydrachna brevilamina Jin, 1997
Hydrachna brevirostris Lundblad, 1969
Hydrachna buccinator Müller, 1776 accepted as Arrenurus buccinator (Müller, 1776)
Hydrachna calcarea Muller, 1776 accepted as Limnesia calcarea (Muller, 1776)
Hydrachna canadensis Marshall, 1929
Hydrachna chilensis Gervais, 1849
Hydrachna china Uchida, 1931 accepted as Hydrachna trilobata Viets, 1926
Hydrachna chrysis Theis, 1832 accepted as Eylais chrysis (Theis, 1832)
Hydrachna clavicornis Müller, 1776 accepted as Piona clavicornis (Muller, 1776)
Hydrachna clavipalpis Lundblad, 1949
Hydrachna clavipalpis Schrank, 1803 accepted as Arrenurus clavipalpis (Schrank, 1803)
Hydrachna coccinea Shaw, 1799 accepted as Eylais coccinea (Shaw, 1799)
Hydrachna coccínea Haldeman, 1842 accepted as Hydrachna haldemani Oudemans, 1937
Hydrachna comosa Koenike, 1896
Hydrachna complanata Müller, 1776 accepted as Axonopsis complanata (Müller, 1776)
Hydrachna conjecta Koenike, 1895
Hydrachna conjectoides Lundblad, 1947
Hydrachna constricta Lundblad, 1941
Hydrachna crassa Lundblad, 1936
Hydrachna crassipalpis Piersig, 1897
Hydrachna crassipes Müller, 1776 accepted as Unionicola crassipes (Muller, 1776)
Hydrachna crenulata Marshall, 1930
Hydrachna cronebergi Koenike, 1897
Hydrachna cruciata Schrank, 1803 accepted as Piona cruciata (Schrank, 1803)
Hydrachna cruenta Muller, 1776
Hydrachna cruentata Lucas, 1836 accepted as Hydrachna cruenta Muller, 1776
Hydrachna cuspidator Müller, 1776 accepted as Arrenurus cuspidator (Müller, 1776)
Hydrachna cyanipes Lucas, 1846 accepted as Arrenurus cyanipes (Lucas, 1846)
Hydrachna danica Thor, 1916 accepted as Hydrachna globosa (DeGeer, 1778)
Hydrachna danubialis Laska, 1964
Hydrachna dartevellei Walter, 1939
Hydrachna davidsi Smith, 1987
Hydrachna denticulata Smith, 1987
Hydrachna denudata Piersig, 1896
Hydrachna despiciens Müller, 1776 accepted as Hydrodroma despiciens (Muller, 1776)
Hydrachna dilatata Daday, 1898
Hydrachna diminuata Lundblad, 1934 accepted as Hydrachna cruenta Muller, 1776
Hydrachna dissecta Viets, 1911 accepted as Hydrachna conjecta Koenike, 1895
Hydrachna dissimilis Halbert, 1903 accepted as Hydrachna globosa (DeGeer, 1778)
Hydrachna distincta Koenike, 1897
Hydrachna dividua Walter, 1925
Hydrachna dorsoscutata Viets, 1933 accepted as Hydrachna miliaria Berlese, 1888
Hydrachna eldoretica Lundblad, 1937
Hydrachna elliptica Müller, 1776 accepted as Arrenurus buccinator (Müller, 1776)
Hydrachna elongata Smith, 1987
Hydrachna ennishonenses Habeeb, 1950
Hydrachna ennishonensis accepted as Hydrachna ennishonenses Habeeb, 1950
Hydrachna erythrophthalma Hermann, 1804 accepted as Limnesia erythrophthalma Oudemans, 1937
Hydrachna eugeni Viets, 1911
Hydrachna evansensis Stout, 1953
Hydrachna extendens Müller, 1776 accepted as Eylais extendens Muller, 1776
Hydrachna extorris Koenike, 1897
Hydrachna exulans Viets, 1933 accepted as Hydrachna miliaria Berlese, 1888
Hydrachna ferox Dalyell, 1851
Hydrachna fissigera Koenike, 1898
Hydrachna formosa Dana & Whelpley, 1836 accepted as Unionicola formosa Dana & Whelpley, 1836
Hydrachna fuscata Müller, 1776 accepted as Limnesia fuscata (Müller, 1776)
Hydrachna fuscata Soar, 1908 accepted as Hydrachna leegei Koenike
Hydrachna gallica Thor, 1916 accepted as Hydrachna globosa (DeGeer, 1778)
Hydrachna geographica Muller
Hydrachna georgei Soar, 1908
Hydrachna germanica Thor, 1916 accepted as Hydrachna globosa (DeGeer, 1778)
Hydrachna globata Koch, 1840 accepted as Hydrachna globosa (DeGeer, 1778)
Hydrachna globator Müller, 1776 accepted as Arrenurus globator (Müller, 1776)
Hydrachna globosa (DeGeer, 1778)
Hydrachna globulus Hermann, 1804 accepted as Hydrachna globosa (DeGeer, 1778)
Hydrachna goldfeldi Thor, 1916
Hydrachna gracilipalpis Walter, 1928
Hydrachna grossipes Müller, 1776 accepted as Unionicola grossipes (Müller, 1776)
Hydrachna guanajuatensis Cook, 1980
Hydrachna halberti Soar, 1908
Hydrachna haldemani Oudemans, 1937