Helichus é um género de escaravelho aquático que se pode encontrar em qualquer parte do mundo, excepto na Austrália e na Antártida . Os adultos medem, em média, 1 a 8 mm de comprimento e vivem em ambientes aquáticos ou ripícolas. As larvas, contudo, desenvolvem-se em terra, o que é incomum, e talvez mesmo único, entre as espécies de insetos aquáticos.
Espécieshttp://www.biolib.cz/en/taxonsubtaxa/id1126754/ Helichus anescens, Grouvelle, 1892 Helichus angulicollis, Reitter, 1887 Helichus angustatus, Grouvelle, 1896) Helichus annandalei, Grouvelle, 1911 Helichus argentinus, Berg, 1885 Helichus asiaticus, Motschulsky, 1845 Helichus basalis, LeConte, 1852 Helichus birmanicus, Bollow, 1940 Helichus bollowi, Hinton, 1939 Helichus brasiliensis, Grouvelle, 1896 Helichus chinensis, Fairmaire, 1888 Helichus collarti, Delève, 1945 Helichus columbianus, Brown, 1931 Helichus confusus, Hinton, 1936 Helichus cordubensis, Berg, 1885 Helichus dicksoni, Waterhouse, 1878 Helichus elateroides, Grouvelle, 1896 Helichus elegans, Waterhouse, 1876 Helichus elongatus, Reitter, 1881 Helichus erichsoni, Waterhouse, 1876 Helichus eruptus, Wickham, 1911 - extinto Helichus fastigiatus, Say, 1824 Helichus fenyosi, Reitter, 1894 Helichus formosanus, Bollow, 1940 Helichus frater, Hinton, 1939 Helichus gibbicollis, Hinton, 1939 Helichus gigas, Grouvelle, 1896 Helichus granulosus, Delève, 1974 Helichus gressitti, Hinton, 1936 Helichus hardwicki, MacLeay, 1825) Helichus hasegawai, Satô, 1985 Helichus hintoni, Bollow, 1940 Helichus indicus, Waterhouse, 1876 Helichus inexpectatus, Delève, 1938 Helichus ivorensis, Delève, 1967 Helichus koltzei, Bollow, 1940 Helichus konoi, Bollow, 1940 Helichus lareynioides, Champion, 1923 Helichus latus, Grouvelle, 1920 Helichus lithophilus, Germar, 1824 Helichus longipes, W. Redtenbacher, 1842 Helichus opacus, Grouvelle, 1892 Helichus palpals, Hinton, 1937 Helichus parallelus, Grouvelle, 1890 Helichus puncticollis, Sharp, 1882 Helichus pusillus, Hinton, 1939 Helichus sericatus, Waterhouse, 1881 Helichus solskyi, Zaitzev, 1908 Helichus striatus, LeConte, 1852 Helichus substriatus, P.W. J. Müller, 1806 Helichus suturalis, LeConte, 1852 Helichus talpoides, Waterhouse, 1876 Helichus tenuior, Wickham, 1912 - extinto Helichus tenuis, Champion, 1923 Helichus tonkineus, Fairmaire, 1888 Helichus triangularis, Musgrave, 1935 Helichus ussuriensis, Lafer in Lavanidov, 1980 Helichus waterhousei, Grouvelle, 1911 Helichus whiteheadi, Waterhouse, 1900
Categoria:Gêneros de driopíneos