Corticolous, in forests (on Fagus and Quercus) and on roadside trees (e.g. Fraxinus, Tilia).

Belgium: Fl.: RRR, Brab.: RR, Mosan: R, Ard., Lorr.: AR.

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

France: Boul.: RRR, Pic.: RRR, Lorr.: RR.

Lit.: Boul.: 71, Di: 187, Ho: 139, 201, 609, La68: 76, NL84: 16, Hanko (1983: 197).