Arthotheliopsis serusiauxii is a species of leaf-dwelling lichen in the family Gomphillaceae.

It was first formally described as a new species in 1997 by Robert Lücking, as a member of genus Echinoplaca.

The type specimen was collected in Costa Rica, growing on the leaves of a dicotyledon.

The specific epithet honours Belgian lichenologist Emmanuël Sérusiaux.

[2] In 2005, Lücking, Sérusiaux, and Antonín Vězda transferred it to genus Arthotheliopsis after a molecular analysis of the Gomphillaceae helped to clarify the phylogenetic relationships in the family.