Megarthrus is a genus of beetles belonging to the family Staphylinidae.
The genus has almost cosmopolitan distribution.
Species: Megarthrus abessinus Bernhauer, 1931 Megarthrus adelphus Bierig, 1940 Megarthrus africanus Eichelbaum, 1913 Megarthrus aino Cuccodoro, 1996 Megarthrus alatorreorum Rodríguez & Navarrete-Heredia, 2015 Megarthrus alesi Cuccodoro, 2003 Megarthrus alienus Cuccodoro, 1998 Megarthrus alticola Cameron, 1924 Megarthrus altivagans Bernhauer, 1929 Megarthrus americanus Sachse, 1852 Megarthrus andinus López-García, Méndez-Rojas & Navarrete-Heredia, 2011 Megarthrus anggiensis Cuccodoro, 1998 Megarthrus angulicollis Mäklin, 1852 Megarthrus antennalis Cameron, 1941 Megarthrus apicicornis Cameron, 1950 Megarthrus arcuatus Hatch, 1957 Megarthrus ashei Cuccodoro & Löbl, 1996 Megarthrus atratus Mäklin, 1852 Megarthrus auricola Cuccodoro, 1995 Megarthrus balensis Cuccodoro, 1999 Megarthrus baliemensis Cuccodoro, 1998 Megarthrus bantu Cuccodoro & Löbl, 1995 Megarthrus basicornis Fauvel, 1904 Megarthrus basilewskyi Fagel, 1957 Megarthrus bellevoyei Saulcy, 1862 Megarthrus bierigi Cuccodoro, 2011 Megarthrus bimaculatus Fauvel, 1904 Megarthrus birmanus Fauvel, 1895 Megarthrus borealis Cuccodoro & Löbl, 1996 Megarthrus budai Liu & Cuccodoro, 2020 Megarthrus calcaratus Coiffait, 1977 Megarthrus cavianae Rodriguez, Navarrete-Heredia & Arriaga-Varela, 2020 Megarthrus chiapas Rodríguez, Navarrete-Heredia, Arriaga-Varela & Cuccodoro, 2020 Megarthrus chinese Li & Jingke, 1993 Megarthrus chobauti Fauvel, 1902 Megarthrus chujiao Liu & Cuccodoro, 2020 Megarthrus clarkei Cuccodoro & Löbl, 1995 Megarthrus con Cuccodoro, 2011 Megarthrus conformis K.Sawada, 1962 Megarthrus congoensis Cameron, 1950 Megarthrus conspirator Cuccodoro, 1996 Megarthrus constrictus Cuccodoro, 1996 Megarthrus convexus Sharp, 1874 Megarthrus coreanus Kim, Myoung Hee & Cuccodoro, 2011 Megarthrus corticalis Sharp, 1889 Megarthrus danieli Cuccodoro, 1999 Megarthrus dentatus Coiffait, 1977 Megarthrus denticollis (Beck, 1817) Megarthrus dentipes Bernhauer, 1938 Megarthrus depressus (Paykull, 1789) Megarthrus dissymetricus Coiffait, 1977 Megarthrus dominicae Cuccodoro & Löbl, 1995 Megarthrus elevatus Coiffait, 1977 Megarthrus excisus J.L.LeConte, 1863 Megarthrus fakir Cuccodoro, 2003 Megarthrus falasha Cuccodoro & Löbl, 1995 Megarthrus fennicus Lahtinen, 1938 Megarthrus festivus Cuccodoro, 2011 Megarthrus fijianus Cuccodoro, 1998 Megarthrus flavolimbatus Cameron, 1924 Megarthrus flavosignatus Bierig, 1940 Megarthrus geginati Cuccodoro, 2010 Megarthrus gigas Fagel, 1957 Megarthrus globulus Cuccodoro, 2011 Megarthrus gressitti Cuccodoro, 1998 Megarthrus harennaensis Cuccodoro, 1999 Megarthrus heise Zhang, Cuccodoro, Chen & Liu, 2021 Megarthrus hemipterus (Illiger, 1794) Megarthrus horticola Cuccodoro & Löbl, 1995 Megarthrus hutu Cuccodoro & Löbl, 1995 Megarthrus impressicollis Eppelsheim, 1893 Megarthrus inaequalis Bierig, 1940 Megarthrus incubifer Cuccodoro, 1996 Megarthrus integricollis Coiffait, 1977 Megarthrus ivani Cuccodoro, 2003 Megarthrus japonicus Sharp, 1874 Megarthrus kamerunensis Bernhauer, 1942 Megarthrus kurbatovi Cuccodoro, 2018 Megarthrus kuscheli Cuccodoro, 1998 Megarthrus lanka Cuccodoro & Zhiping Liu, 2016 Megarthrus lisae Cuccodoro, 2011 Megarthrus loebli Cuccodoro, 2018 Megarthrus longicornis Wollaston, 1854 Megarthrus machu Cuccodoro, 2011 Megarthrus magnicaudatus Cuccodoro & Löbl, 1995 Megarthrus magnificus Cuccodoro, 2011 Megarthrus mahnerti Cuccodoro & Löbl, 1995 Megarthrus major Cuccodoro & Löbl, 1995 Megarthrus malaisei Scheerpeltz, 1965 Megarthrus mammiger Bierig, 1940 Megarthrus maniwaata Cuccodoro & Löbl, 1995 Megarthrus maronitus Fagel, 1968 Megarthrus martensi Coiffait, 1982 Megarthrus mastiger Bierig, 1940 Megarthrus merabet Cuccodoro & Löbl, 1995 Megarthrus metanas Cuccodoro, 2011 Megarthrus minor Coiffait, 1977 Megarthrus mirabilis Cuccodoro, 2011 Megarthrus montanus K.Sawada, 1962 Megarthrus monticola Cameron, 1942 Megarthrus mukankundiyeorum Cuccodoro & Löbl, 1995 Megarthrus mwami Cuccodoro & Löbl, 1995 Megarthrus nanus Cuccodoro & Löbl, 1995 Megarthrus narendrani Cuccodoro & Zhiping Liu, 2016 Megarthrus negus Cuccodoro & Löbl, 1995 Megarthrus newtoni Cuccodoro & Löbl, 1996 Megarthrus nigerrima Cameron, 1941 Megarthrus nigrinus J.Sahlberg, 1876 Megarthrus nilgiriensis Cuccodoro & Zhiping Liu, 2016 Megarthrus niloticus Cuccodoro & Löbl, 1995 Megarthrus nitidulus Kraatz, 1857 Megarthrus notabilis Cameron, 1941 Megarthrus occidentalis Cuccodoro & Löbl, 1996 Megarthrus octopus Cuccodoro, 2011 Megarthrus ogloblini Bruch, 1940 Megarthrus oromo Cuccodoro, 1999 Megarthrus ovalis Cameron, 1