The new genus Angiactis Aptroot & Sparrius is described, with three species, A. bermudensis LaGreca sp. nov. from Bermuda, A. littoralis (Kantvilas) Aptroot & Sparrius comb. nov. from Australia and A. spinicola Aptroot & Sparrius sp. nov. from the Galápagos. The new genus differs from Lecanographa in the presence of a thalline exciple, and from Llimonaea in the non-corticate thallus and presence of a thalline exciple.
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Aptroot et al. (2008) studied this question.