Corticolous in unknown ecological conditions for the only known Belgian specimen; on Quercus in both French localities.

Belgium: Fl.: RRR (†<1900).

Luxembourg: - .

France: Boul.: RR (1954), Pic.: RR, Brab.: RRR (†1910).

Lit.: BDL1: 218-219, Boul.: 64, L9: 24, NL97: 26, Coppins (1981: 243), Purvis et al. (1992: 462).