- Mansoniella elongata Hu & L.Y. Zheng, 1999
- Mansoniella flava Hu & L.Y. Zheng, 1999
- Mansoniella formosana C.S. Lin, 2002
- Mansoniella juglandis Hu & L.Y. Zheng, 1999
- Mansoniella kungi C.S. Lin, 2001
- Mansoniella rosacea Hu & L.Y. Zheng, 1999
- Mansoniella rubida Hu & L.Y. Zheng, 1999
- Mansoniella rubistrigata Liu & Mu, 2022
- Mansoniella sassafri (Zheng & Liu, 1992)
- Mansoniella shihfanae C.S. Lin, 2000
- Mansoniella wangi (Zheng & X.Z. Li, 1993)
- Mansoniella wuyishana C.S. Lin, 2002
- Mansoniella yafanae C.S. Lin, 2000
- Marcius inermis Hsiao, 1964
- Marcius longirostris Hsiao, 1964
- Marcius nigrospinosus Ren, 1993
- Marcius ornatulus (Distant, 1908)
- Marcius sichuananus Ren, 1993
- Marcius trispinosus Hsiao, 1964
- Marmottania rungsi Vidal, 1952
- Marmottania simonis Puton, 1887
- Marrubiocoris deserti Wagner, 1970
- Martinina inexpectata (Schouteden, 1907)
- Masoas subtilis Linnavuori, 1974
- Masoas transvaaliensis Distant, 1906
- Massocephalus maculatus Dallas, 1851
- Masthletinus Reuter, 1879
- Mattiphus jaspideus (Herrich-Schaeffer, 1851)
- Mattiphus minutus Blöte, 1945
- Mattiphus splendidus Distant, 1921
- Mattiphus yunnanensis Zia, 1957
- Maurodactylus acanthophylli V.G. Putshkov, 1980
- Maurodactylus albidus (Kolenati, 1845)
- Maurodactylus alutaceus (Fieber, 1870)
- Maurodactylus fulvus (Reuter, 1904)
- Maurodactylus kukuensis V.G. Putshkov, 1978
- Maurodactylus nigrigenis (Reuter, 1890)
- Mecidea indica Dallas, 1851
- Mecidea lindbergi Wagner, 1954
- Mecidea pallida Stål, 1854
- Mecidea pallidissima Jensen-Haarup, 1922
- Mecidea rungsi Vidal, 1950
- Mecistocoris lineatus Reuter, 1877
- Mecistoscelis scirtetoides Reuter, 1891
- Mecocnemis scutellaris Hsiao, 1964
- Mecomma (Globicellus) dispar (Boheman, 1852)
- Mecomma (Mecomma) ambulans (Fallén, 1807)
- Mecomma (Mecomma) ambulans ambulans (Fallén, 1807)
- Mecomma (Mecomma) ambulans montanum Josifov, 1969
- Mecomma (Mecomma) capitatum Liu & Zheng, 1993