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Species found: 382
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Hydaticus paganus Clark, 1864
Coleoptera, Dytiscidae
Hydaticus palliatus Aubé, 1838
Hydaticus parallelus Clark, 1864
Hydaticus peregrinus Guignot, 1948
Hydaticus pescheti Gschwendtner, 1930
Hydaticus petitii Aubé, 1838
Hydaticus philippensis Wehncke, 1876
Hydaticus piceus LeConte, 1863
Hydaticus pictus Sharp, 1882
Hydaticus plagiatus Régimbart, 1895
Hydaticus platamboides Régimbart, 1889
Hydaticus platteeuwi Severin, 1890
Hydaticus poecilus Régimbart, 1895
Hydaticus ponticus Sharp, 1882
Hydaticus propinquus Guignot, 1951
Hydaticus pulcher Clark, 1863
Hydaticus pullatus Guignot, 1952
Hydaticus quadriguttatus Régimbart, 1895
Hydaticus quadrivittatus Blanchard, 1843
Hydaticus reductus Régimbart, 1899
Hydaticus rhantaticoides Régimbart, 1892
Hydaticus rhantoides Sharp, 1882
Hydaticus ricinus Wewalka, 1979
Hydaticus riehli Wehncke, 1876
Hydaticus rimosus Aubé, 1838
Hydaticus rivanolis Wewalka, 1979
Hydaticus rochei Camerano, 1907
Hydaticus saecularis Pederzani, 1982
Hydaticus satoi Wewalka, 1975
Hydaticus scapularis Guignot, 1952
Hydaticus schelkovnikovi Zaitzev, 1913
Hydaticus schultzei Zimmermann, 1924
Hydaticus sellatus Régimbart, 1883
Hydaticus seminiger De Geer, 1774
Hydaticus septemlineatus Zimmermann, 1928
Hydaticus servillianus Aubé, 1838
Hydaticus severini Régimbart, 1895
Hydaticus sexguttatus Régimbart, 1899
Hydaticus sobrinus Aubé, 1838
Hydaticus speciosus Régimbart, 1895
Hydaticus stappersi Peschet, 1915
Hydaticus subfasciatus Laporte, 1835
Hydaticus subsignatus Harold, 1879
Hydaticus suffusus Régimbart, 1892
Hydaticus tenuis Gschwendtner, 1938
Hydaticus testudinarius Régimbart, 1895
Hydaticus thermonectoides Sharp, 1884
Hydaticus torosus Guignot, 1947
Hydaticus transversalis Pontoppidan, 1763
Hydaticus tschoffeni Régimbart, 1895
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