• Architrypethelium seminudum (Mont.) Aptroot, 1991
• Architrypethelium uberinum (Fée) Aptroot, 1991
• Arthopyrenia advenula (Nyl.) H. Olivier, 1903 accepted as Phaeospora parasitica (Lönnr.) Zopf, 1874
• Arthopyrenia aeruginella (Nyl.) Arnold, 1885 accepted as Mycoglaena myricae (Nyl.) R.C. Harris, 1973
• Arthopyrenia alba (Schrad.) Zahlbr., 1921 accepted as Acrocordia gemmata (Ach.) A. Massal., 1854
• Arthopyrenia albida Müll. Arg., 1884 accepted as Polymeridium albidum (Müll. Arg.) R.C. Harris, 1986
• Arthopyrenia albocinerea (Kremp.) Müll. Arg., 1883 accepted as Polymeridium albocinereum (Kremp.) R.C. Harris, 1993
• Arthopyrenia allogena (Nyl.) Arnold, 1870
• Arthopyrenia americana A. Massal., 1852 accepted as Anisomeridium americanum (A. Massal.) R.C. Harris, 1995
• Arthopyrenia analepta (Ach.) A. Massal., 1852
• Arthopyrenia analepta sensu auct. brit.p.p. accepted as Arthopyrenia punctiformis A. Massal., 1852
• Arthopyrenia analeptoides (Nyl.) A.L. Sm., 1911 accepted as Mycoporum antecellens (Nyl.) R.C. Harris, 1995
• Arthopyrenia anisoloba Müll. Arg., 1883 accepted as Anisomeridium anisolobum (Müll. Arg.) Aptroot, 1995
• Arthopyrenia antecellens (Nyl.) Arnold, 1870 accepted as Mycoporum antecellens (Nyl.) R.C. Harris, 1995
• Arthopyrenia aphorisasa (Stirt.) A.L. Sm., 1911
• Arthopyrenia arenicola (Leight.) A.L. Sm., 1911 accepted as Pyrenocollema argilospilum (Nyl.) Coppins, 1992
• Arthopyrenia areniseda A.L. Sm., 1911 accepted as Pyrenocollema arenisedum (A.L. Sm.) Coppins, 1992
• Arthopyrenia argilospila (Nyl.) A.L. Sm., 1918 accepted as Pyrenocollema argilospilum (Nyl.) Coppins, 1992
• Arthopyrenia atractospora Zahlbr., 1935
• Arthopyrenia beloniza (Stirt.) Müll. Arg., 1894 accepted as Rhytidiella beloniza (Stirt.) M.B. Aguirre, 1991
• Arthopyrenia biformis (Borrer) A. Massal., 1855 accepted as Anisomeridium biforme (Borrer) R.C. Harris, 1978
• Arthopyrenia bryospila (Nyl.) Arnold, 1870 accepted as Pyrenocollema bryospilum (Nyl.) Coppins, 1992
• Arthopyrenia byssacea (Taylor) A.L. Sm., 1911 accepted as Anisomeridium biforme (Borrer) R.C. Harris, 1978
• Arthopyrenia caesia (Nyl.) Zahlbr., 1921 accepted as Pyrenocollema caesium (Nyl.) R.C. Harris, 1987
• Arthopyrenia carinthiaca J. Steiner, 1913 accepted as Anisomeridium carinthiacum (J. Steiner) R.C. Harris, 1987
• Arthopyrenia carneobrunneola Coppins, 1988
• Arthopyrenia carpinea (Pers.) Müll. Arg., 1862 accepted as Porina aenea (Wallr.) Zahlbr., 1922
• Arthopyrenia catapasta (Nyl.) Müll. Arg., 1883 accepted as Polymeridium catapastum (Nyl.) R.C. Harris, 1986
• Arthopyrenia cavata (Ach.) R.C. Harris, 1973 accepted as Acrocordia cavata (Ach.) R.C. Harris, 1974
• Arthopyrenia cembrina (Anzi) Grummann ex D. Hawksw., 1980 accepted as Arthopyrenia punctiformis A. Massal., 1852
• Arthopyrenia cembrina (Anzi) Grummann, 1980 accepted as Arthopyrenia punctiformis A. Massal., 1852
• Arthopyrenia cerasi (Schrad.) A. Massal., 1852
• Arthopyrenia chlorococca (Leight.) A.L. Sm., 1911 accepted as Lauderlindsaya acroglypta (Norman) R. Sant., 1993
• Arthopyrenia chlorotica (Ach.) H. Olivier, 1884 accepted as Porina chlorotica (Ach.) Müll. Arg., 1884
• Arthopyrenia cinchonae (Ach.) Müll. Arg., 1883
• Arthopyrenia cinereopruinosa (Schaer.) A. Massal., 1855
• Arthopyrenia cinereopruinosa sensu auct. brit.p.p. pre-c., 1980 accepted as Anisomeridium ranunculosporum (Coppins & P. James) Coppins, 2002
• Arthopyrenia coepulona Norman, 1868 accepted as Zwackhiomyces coepulonus (Norman) Grube & R. Sant., 1990
• Arthopyrenia conformis (Nyl.) Müll. Arg., 1894 accepted as Anisomeridium biforme (Borrer) R.C. Harris, 1978
• Arthopyrenia conoidea (Fr.) Zahlbr., 1903 accepted as Acrocordia conoidea (Fr.) Körb., 1855
• Arthopyrenia consequens (Nyl.) Arnold, 1870
• Arthopyrenia consobrina (Nyl.) Müll. Arg., 1883 accepted as Anisomeridium consobrinum (Nyl.) Aptroot, 1995
• Arthopyrenia conspurcans Th. Fr., 1867 accepted as Zwackhiomyces dispersus (J. Lahm ex Körb.) Triebel & Grube, 1990
• Arthopyrenia contendens (Nyl.) Müll. Arg., 1883 accepted as Polymeridium contendens (Nyl.) R.C. Harris, 1980
• Arthopyrenia cookei (Linds.) Arnold, 1874 accepted as Muellerella lichenicola (Sommerf.) D. Hawksw., 1979
• Arthopyrenia corniculata (Hoffm.) H. Olivier, 1803 accepted as Obryzum corniculatum (Hoffm.) Wallr., 1825
• Arthopyrenia coryli (A. Massal.) Müll. Arg., 1862 accepted as Pyrenula coryli A. Massal., 1852
• Arthopyrenia crombiei A.L. Sm., 1911 accepted as Arthopyrenia cerasi (Schrad.) A. Massal., 1852
• Arthopyrenia decolorella (Nyl.) Tomin, 1938 accepted as Cercidospora decolorella (Nyl.) O.E. Erikss. & J.Z. Yue, 1992
• Arthopyrenia desistens (Nyl.) A.L. Sm., 1911
• Arthopyrenia dirumpens Müll. Arg., 1895
• Arthopyrenia dispersa J. Lahm ex Körb., 1865 accepted as Zwackhiomyces dispersus (J. Lahm ex Körb.) Triebel & Grube, 1990
• Arthopyrenia elegans R. Sant. ined., 1975 accepted as Pyrenocollema elegans R. Sant., 1992
• Arthopyrenia endococcoidea (Nyl.) H. Olivier, 1906 accepted as Phaeospora rimosicola (Leight. ex Mudd) Hepp ex Stein, 1879
• Arthopyrenia epicymatia (Wallr.) Müll. Arg., 1884 accepted as Stigmidium schaereri (A. Massal.) Trevis., 1860
• Arthopyrenia epidermidis A. Massal., 1852 accepted as Arthopyrenia punctiformis A. Massal., 1852
• Arthopyrenia epigaeoides (Nyl.) H. Olivier, 1902 accepted as Porina mammillosa (Th. Fr.) Zahlbr., 1922
• Arthopyrenia epipolaea (Borrer) A. Massal., 1852 accepted as Acrocordia conoidea (Fr.) Körb., 1855
• Arthopyrenia faginea (Schaer.) Swinscow, 1965 accepted as Strigula stigmatella (Ach.) R.C. Harris, 1980
• Arthopyrenia fallacior (Nyl.) Müll. Arg., 1885
• Arthopyrenia fallax (Nyl.) Arnold, 1873 accepted as Arthopyrenia analepta (Ach.) A. Massal., 1852
• Arthopyrenia foveolata A.L. Sm., 1911 accepted as Pyrenocollema halodytes (Nyl.) R.C. Harris, 1987
• Arthopyrenia fraxini A. Massal., 1852
• Arthopyrenia fumago Mudd, 1861 accepted as Arthopyrenia punctiformis A. Massal., 1852
• Arthopyrenia fuscatae Arnold accepted as Stigmidium fuscatae (Arnold) R. Sant., 1988
• Arthopyrenia gemmata (Ach.) A. Massal., 1852 accepted as Acrocordia gemmata (Ach.) A. Massal., 1854
• Arthopyrenia gravastella (Kremp.) Müll. Arg., 1882
• Arthopyrenia grisea (Schleich. ex Schaer.) Körb., 1855
• Arthopyrenia grisea sensu auct. brit., non (Schleich. ex Schaer.) Körb. accepted as Arthopyrenia cerasi (Schrad.) A. Massal., 1852
• Arthopyrenia gyalectoides M. Knowles ex A.L. Sm. accepted as Pyrenocollema halodytes (Nyl.) R.C. Harris, 1987
• Arthopyrenia gyrophorarum Arnold, 1896 accepted as Stigmidium gyrophorarum (Arnold) D. Hawksw., 1975
• Arthopyrenia halizoa (Leight.) Arnold, 1891 accepted as Verrucaria halizoa Leighton, 1871
• Arthopyrenia halodytes (Nyl.) Arnold, 1891 accepted as Pyrenocollema halodytes (Nyl.) R.C. Harris, 1987
• Arthopyrenia halodytes sensu auct. brit.p.p. accepted as Pyrenocollema orustense (Erichsen) A. Fletcher, 1992
• Arthopyrenia halodytes sensu auct. brit.p.p. accepted as Pyrenocollema sublitorale (Leight.) R.C. Harris, 1992
• Arthopyrenia hygrophilus (Arnold) H. Olivier, 1906 accepted as Zwackhiomyces dispersus (J. Lahm ex Körb.) Triebel & Grube, 1990
• Arthopyrenia innata (Nyl.) Arnold, 1874 accepted as Arthopyrenia allogena (Nyl.) Arnold, 1870
• Arthopyrenia kelpii Körb., 1865 accepted as Pyrenocollema halodytes (Nyl.) R.C. Harris, 1987
• Arthopyrenia knightii Walt. Watson, 1932 accepted as Arthopyrenia socialis Körb., 1865
• Arthopyrenia laburni Arnold, 1861 accepted as Arthopyrenia punctiformis A. Massal., 1852
• Arthopyrenia lapponina Anzi, 1864 accepted as Arthopyrenia analepta (Ach.) A. Massal., 1852
• Arthopyrenia lectissima (Fr.) H. Olivier, 1884 accepted as Porina lectissima (Fr.) Zahlbr., 1922
• Arthopyrenia leptalea (Durieu & Mont.) H. Olivier, 1902 accepted as Porina leptalea (Durieu & Mont.) A.L. Sm., 1911
• Arthopyrenia leptotera (Nyl.) Arnold, 1870 accepted as Stigmidium marinum (Deakin) Swinscow, 1965
• Arthopyrenia linearis (Leight.) Mudd, 1861 accepted as Porina linearis (Leight.) Zahlbr., 1922
• Arthopyrenia litoralis sensu auct. brit. accepted as Pyrenocollema sublitorale (Leight.) R.C. Harris, 1992
• Arthopyrenia lomnitzensis Stein, 1879 accepted as Sagediopsis lomnitzensis (Stein) Orange, 2002
• Arthopyrenia lucens (Taylor) Mudd, 1861 accepted as Porina guentheri (Flot.) Zahlbr., 1922
• Arthopyrenia macquariensis C.W. Dodge, 1970
• Arthopyrenia macrospora (A. Massal.) Stirt., 1909 accepted as Acrocordia macrospora A. Massal., 1855
• Arthopyrenia marina (Deakin) A.L. Sm., 1911 accepted as Stigmidium marinum (Deakin) Swinscow, 1965
• Arthopyrenia mesotropa (Nyl.) Arnold, 1870 accepted as Thelidium minutulum Körb., 1863
• Arthopyrenia microspila Körb., 1865 accepted as Stigmidium microspilum (Körb.) D. Hawksw., 1975
• Arthopyrenia monensis (Wheldon) Zahlbr., 1922 accepted as Pyrenocollema monense (Wheldon) Coppins, 1992
• Arthopyrenia myricae (Nyl.) Zahlbr., 1903 accepted as Mycoglaena myricae (Nyl.) R.C. Harris, 1973
• Arthopyrenia nitescens (Salwey) Mudd, 1861
• Arthopyrenia nitida (Weigel) H. Olivier, 1884 accepted as Pyrenula nitida (Weigel) Ach., 1814
• Arthopyrenia nylanderi (Hepp) Riedl, 1990 accepted as Thelidium nylanderi (Hepp) Lönnr.
• Arthopyrenia obscura (Pers.) Riedl, 1962 accepted as Mycoporellum obscurum (Pers.) A.L. Sm., 1911
• Arthopyrenia obscura (Pers.) Riedl, 1963 accepted as Mycoporellum obscurum (Pers.) A.L. Sm., 1911