The roughly 200 extant and over 50 extinct species are divided among 52 genera in 5 subfamilies:
Eurynolambrinae Števčić, 1994 •
Eurynolambrus H. Milne-Edwards & Lucas, 1841
Majinae Samouelle, 1819 •
Ageitomaia Griffin & Tranter, 1986 •
Anacinetops Miers, 1879 •
Choniognathus Rathbun, 1932 •
Cyclax Dana, 1851 •
Entomonyx Miers, 1884 •
Eurynome Leach, 1814 •
Jacquinotia Rathbun, 1915 •
Kasagia Richer de Forges & Ng, 2007 •
Kimbla Griffin & Tranter, 1986 •
Leptomithrax Miers, 1876 •
Maiopsis Faxon, 1893 •
Maja Lamarck, 1801 •
Majella Ortmann, 1893 •
Microhalimus Haswell, 1880 •
Naxia Latreille, 1825 •
Notomithrax Griffin, 1963 •
Paraentomonyx T. Sakai, 1983 •
Paramithrax H. Milne-Edwards, 1837 •
Pippacirama Griffin & Tranter, 1986 •
Prismatopus Ward, 1933 •
Schizophroida T. Sakai, 1933 •
Schizophrys White, 1848 •
Seiitaoides Griffin & Tranter, 1986 •
Temnonotus A. Milne-Edwards, 1875 •
Teratomaia Griffin & Tranter, 1986 •
Thersandrus Rathbun, 1897 •
Tumulosternum McCulloch, 1913 •
Wilsonimaia † Blow & Manning, 1996
Micromaiinae † Beurlen, 1930 •
Micromaia † Bittner, 1875 •
Mithracia † Bell, 1858 •
Pisomaja † Lőrenthey, in Lőrenthey & Beurlen, 1929
Mithracinae MacLeay, 1838 •
Ala Lockington, 1877 •
Antarctomithrax † Feldmann, 1994 •
Coelocerus A. Milne-Edwards, 1875 •
Cyclocoeloma Miers, 1880 •
Cyphocarcinus A. Milne-Edwards, 1868 •
Leptopisa Stimpson, 1871 •
Macrocoeloma Miers, 1879 •
Micippa Leach, 1817 •
Microphrys Milne-Edwards, 1851 •
Mithraculus White, 1847 •
Mithrax A. G. Desmarest, 1823 •
Nemausa A. Milne-Edwards, 1875 •
Paranaxia Rathbun, 1924 •
Picroceroides Miers, 1886 •
Stenocionops A. G. Desmarest, 1823 •
Teleophrys Stimpson, 1860 •
Thoe Bell, 1836 •
Tiarinia Dana, 1851
Planoterginae Števčić, 1991 •
Hemus A. Milne-Edwards, 1875 •
Planotergum Balss, 1935 Image:Majoidea (pe Cyclocoeloma tuberculata) Landaagiraavaru.JPG|
Cyclocoeloma cf. tuberculata Image:Leptomithrax gaimardii P2023255.JPG|
Leptomithrax gaimardii Image:Maja squinado.jpg|
Maja squinado Image:Micippa platipes, sur le dos.jpg|
Micippa platipes (on its back) Image:Female Mithraculus sculptus Crab.jpg|
Mithraculus sculptus Image:Mithrax pilosus.jpg|
Mithrax pilosus ==References==