Lichenicolous, on Usnea species, especially U. ceratina and U. subfloridana.

Belgium: Mosan: RRR, Ard.: RR.

Luxembourg: Ard.: RR, Lorr.: RRR (1966).

France: - .

Lit.: L6: 140, NL84: 12, Diederich (1996: 13-14), Diederich & Christiansen (1994).