Sclerococcum stigma (Dactylosporaceae) a new combination for Dactylospora stigma, a forgotten lichenicolous fungus that grows on Porpidia macrocarpa. A new combination, Sclerococcum stigma (Rehm) Nav.-Ros. & Romero, is proposed to include Dactylospora stigma (Rehm) Rehm ex Arnold, a lichenicolous fungus that grows on Porpidia macrocarpa in different localities in the Alps (Swabia and Austrian Tyrol) and the Pyrenees (Catalonia). A detailed description of the species is included, and it is compared with the related species of the genus. Key words: lichenicolous fungi, Sclerococcum stigma comb. nov., Dactylospora, Dactylosporaceae, Sclerococcales, Pyrenees, Alps, Spain, Austria.