Corticolous, often on branches of Salix, also on rough bark.

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

Luxembourg: Ard.: RRR, Lorr.: R.

France: Pic.: RRR, Lorr.: RR. Most probably quite common, but overlooked.

Lit.: Di: 84-85, L3: 28, NL84: 13.