• Species: Arthopyrenia analepta Anzi
• Remark: earlier under Arthopyrenia lapponina Anzi
• Fungus type: saprotrophic
• Treatment in Estonia: certain

• Species: Arthopyrenia antecellens (Nyl.) Arnold
• Remark: see: Mycoporum antecellens
• Fungus type: saprotrophic
• Treatment in Estonia: synonym

• Species: Arthopyrenia cerasi (Schrad.) A. Massal.
• Remark:
• Fungus type: saprotrophic
• Treatment in Estonia: certain

• Species: Arthopyrenia cinereopruinosa (Schaer.) A. Massal.
• Remark:
• Fungus type: saprotrophic
• Treatment in Estonia: certain

• Species: Arthopyrenia grisea (Schleich. ex Schaer.) Körb.
• Remark:
• Fungus type: saprotrophic
• Treatment in Estonia: certain

• Species: Arthopyrenia lapponina Anzi
• Remark: see: Arthopyrenia analepta
• Fungus type: saprotrophic
• Treatment in Estonia: synonym

• Species: Arthopyrenia punctiformis (Pers.) A. Massal.
• Remark: see: Naetrocymbe punctiformis
• Fungus type: saprotrophic
• Treatment in Estonia: synonym

• Species: Arthopyrenia rhyponta (Ach.) A. Massal.
• Remark: see: Naetrocymbe rhyponta
• Fungus type: saprotrophic
• Treatment in Estonia: synonym

• Species: Arthothelium ruanum (A. Massal.) Körb.
• Remark: earlier under Arthonia ruana
• Fungus type: lichenized
• Treatment in Estonia: certain

• Species: Arthothelium scandinavicum Th. Fr.
• Remark:
• Fungus type: saprotrophic
• Treatment in Estonia: certain

• Species:
• Remark:
• Fungus type:
• Treatment in Estonia: