Phaeococcomycetaceae Lichenostigmatales is an order of fungi in the class Arthoniomycetes.

[1] Lichenostigmatales was circumscribed in 2014 by Damien Ertz, Paul Diederich, and James D. Lawrey, with genus Lichenostigma assigned as the type.

Using molecular phylogenetics, they identified a lineage of taxa in the Arthoniomycetes that were phylogenetically distinct from the order Arthoniales.

[2] Recent estimates for the number of taxa in the family Phaeococcomycetaceae suggest that it contains 3 genera (Etayoa, Lichenostigma, and Phaeococcomyces) and either 31[3] or 37 species.

[1] The monotypic genus Antarctolichenia was added to Phaeococcomycetaceae in 2021.