Syn.: Verrucaria fuscula Nyl., V. insularis (A. Massal.) Jatta, Dermatocarpon insulare (A. Massal.) Mig.

Lichenicolous lichen, parasitic on thalli of Aspicilia calcarea, over calcareous, natural outcrops.

Belgium: Mosan: RR.

Luxembourg: - .

France: - .

Lit.: Ertz: 41-42, L8: 85.