Lichenicolous, on a great variety of lichens belonging to Cladonia, Evernia, Flavoparmelia, Hypocenomyce, Hypogymnia, Lecanora, Lecidella, Mycoblastus, Parmelia, Parmeliopsis, Pertusaria, Platismatia, Ramalina and Usnea.

Belgium: Camp.: RR, Mosan: RR, Ard.: AR, Lorr.: R.

Luxembourg: Ard.: AR, Lorr.: AC.

France: Mar.: RRR, Ard.: RR.

Lit.: Di: 243-244, LF0: 20.