Corticolous, on Fagus, Fraxinus and Sorbus, in forests or on roadside trees.

Belgium: Brab.: RRR (†<1900), Mosan: RR (†1962), Ard.: RR (†1883).

Luxembourg: Lorr.: R (†1890).

France: - .

Now extinct throughout the area of study.

Lit.: Di: 71-72, Ma: 172-176.