Macracanthopsis REUTER, 1881 Þ Harpactorini, Harpactorinae
Macrocephalus SWEDERUS, 1797 Þ Macrocephalini, Phymatinae
Madecassosaica VILLIERS, 1957 Þ Saicinae
Mafulemesa WYGODZINSKY, 1966 Þ Leistarchini, Emesinae
Mafulucoris MILLER, 1958 Þ Harpactorini, Harpactorinae
Makilingana MILLER, 1953 Þ Harpactorini, Harpactorinae
Malacopus STAL, 1860 Þ Ploiariolini, Emesinae
Malaiseana MILLER, 1954 Þ Dicrotelini, Harpactorinae
Maldonadocoris ZHAO et al., 2006 Þ Harpactorini, Harpactorinae
Mametina VILLIERS, 1964 Þ Stenopodainae
Mametocoris MILLER, 1956 Þ Harpactorini, Harpactorinae
Manangocoris MILLER, 1954 Þ Manangocorinae
Mangabea VILLIERS, 1970 Þ Collartidini, Emesinae
Manicocoris STAL, 1866 Þ Apiomerini, Harpactorinae
Mankuninga DISTANT, 1902 Þ Reduviinae
Maraenaspis KARSCH, 1892 Þ Ectrichodiinae
Marbodus DISTANT, 1904 Þ Reduviinae
Mardania STAL, 1859 Þ Reduviinae
Margacoris CARPINTERO, 1980 Þ Ectrichodiinae
Margasus STAL, 1858 Þ Harpactorini, Harpactorinae
Marjoriana BERENGER, 2007 Þ Harpactorini, Harpactorinae
Maroantsetrana VILLIERS, 1968 Þ Physoderinae
Mascaregnasa DISTANT, 1909 Þ Ectrichodiinae
Massartia SCHOUTEDEN, 1952 Þ Harpactorini, Harpactorinae
Mastigonomus BERGROTH, 1894 Þ Harpactorini, Harpactorinae
Mastocoris MILLER, 1959 Þ Harpactorini, Harpactorinae
Mastostethocoris MILLER, 1958 Þ Harpactorini, Harpactorinae
Matangocoris MILLER, 1940 Þ Tribelocephalini, Tribelocephalinae
Mayemesa WYGODZINSKY, 1945 Þ Emesini, Emesinae
Meccus STAL, 1859 Þ Triatomini, Triatominae
Mecistocoris REUTER, 1877 Þ Harpactorini, Harpactorinae
Megapocaucus MILLER, 1954 Þ Tribelocephalini, Tribelocephalinae
Mekeocoris MILLER, 1958 Þ Stenopodainae
Melanolestes STAL, 1866 Þ Peiratinae
Menbyolidis VILLIERS, 1948 Þ Ectrichodiinae
Mendanocoris MILLER, 1956 Þ Mendanocorini, Phimophorinae
Mendis STAL, 1859 Þ Ectrichodiinae
Mendola BREDDIN, 1900 Þ Ectrichodiinae
Mepraia MAZZA et al., 1940 Þ Triatomini, Triatominae
Merifanocoris MILLER, 1955 Þ Stenopodainae
Mesacanthaspis LIVINGSTONE & MURUGAN, 1993 Þ Reduviinae
Mesosepis WYGODZINSKY, 1966 Þ Ploiariolini, Emesinae
Metagreuocoris VILLIERS, 1965 Þ Macrocephalini, Phymatinae
Metapterus COSTA, 1863 Þ Metapterini, Emesinae
Micrauchenus AMYOT & SERVILLE, 1843 Þ Apiomerini, Harpactorinae
Microcarenus BERGROTH, 1895 Þ Harpactorini, Harpactorinae
Microcleptocoris VILLIERS, 1968 Þ Peiratinae
Microlestria STAL, 1872 Þ Reduviinae
Micropolytoxus ELKINS, 1962 Þ Saicinae
Microsandalus STAL, 1866 Þ Peiratinae
Microsanta BREDDIN, 1903 Þ Ectrichodiinae
Microstemmatoides PUTSHKOV, 1985 Þ Ectrichodiinae
Microstemmella MILLER, 1952 Þ Ectrichodiinae
Microstemmidea MILLER, 1952 Þ Ectrichodiinae
Microtomus ILLIGER, 1807 Þ Hammacerinae
Microtriatoma PROSEN & MARTINEZ, 1952 Þ Bolboderini, Triatominae
Microvarus JEANNEL, 1917 Þ Reduviinae
Microvescia WYGODZINSKY, 1943 Þ Vesciinae
Millotina VILLIERS, 1953 Þ Leistarchini, Emesinae
Mimocleptria HORVATH, 1914 Þ Ectrichodiinae
Mimoelasmodema VILLIERS, 1962 Þ Physoderinae
Miomerocerus KARSCH, 1892 Þ Ectrichodiinae
Mirambulus BREDDIN, 1901 Þ Vesciinae
Mireella VILLIERS, 1967 Þ Harpactorini, Harpactorinae
Mireicoris VILLIERS, 1967 Þ Harpactorini, Harpactorinae
Mokoto SCHOUTEDEN, 1952 Þ Harpactorini, Harpactorinae
Monicacoris PUTSHKOV, 1985 Þ Leistarchini, Emesinae
Montina AMYOT & SERVILLE, 1843 Þ Harpactorini, Harpactorinae
Moramanga VILLIERS, 1962 Þ Reduviinae
Moto SCHOUTEDEN, 1932 Þ Harpactorini, Harpactorinae
Motoperius TORDO, 1958 Þ Harpactorini, Harpactorinae
Motucoris MILLER, 1958 Þ Stenopodainae
Mucrolicter ELKINS, 1962 Þ Harpactorini, Harpactorinae
Muizonia VILLIERS, 1954 Þ Stenopodainae
Mutillocoris VILLIERS, 1964 Þ Peiratinae
Myiophanes REUTER, 1881 Þ Emesini, Emesinae
Myocoris BURMEISTER, 1835 Þ Harpactorini, Harpactorinae