Dacampia rubra sp. nov. (Ascomycota, Dacampiaceae), a lichenicolous fungus on vagrant Aspicilia species

Dacampia rubra sp. nov. is described on vagrant Aspicilia species from eastern Turkey and the Russian Federation. It is most similar to D. rhizocarpicola, an imperfectly known species described from Rhizocarpon obscuratum, but it differs from that species in the ascomata arising singly and is unique in the genus in having an orange-red pigmented region of the exciple surrounding the ostiole. The new species is the first Dacampia species reported on Aspicilia. It is associated with Phoma-like conidiomata, as also happens in D. muraliicola, but it was unclear whether this was an anamorph or an independent fungus.