Schaereria xerophila is a species of saxicolous (rock-dwelling), crustose lichen in the family Schaereriaceae.

[1] Found in Australia, it was formally described as a new species in 1989 by lichenologists Gerhard Rambold and Helmut Mayrhofer.

The type specimen was found growing on lowland, inland siliceous rock in Queensland,[2] but its range has been expanded to include Tasmania.

It is one of five species of Schaereria to occur in Australia.

[3] Some diagnostic characteristics of Schaereria xerophila include its crustose, areolate thallus, semi-immersed apothecia, and roughly spherical, non-halonate spores.