[2] A 2012 molecular analysis of specimens collected from northern Thailand revealed three new species in the family (Ceramothyrium thailandicum, Chaetothyrium brischofiacola and Phaeosaccardinula ficus).

[3] The first known lichen-forming species in Chaetothyriaceae, Ceramothyrium ryukyuense, was described in 2024 from Okinawa Island in southern Japan.

The species is characterized by minute, brown ascomata and small, predominantly one-septate ascospores.

It differs from non-lichenized Ceramothyrium species, such as C. paiveae and C. philodendri, in its smaller asci and simpler spore structure.

Phylogenetic analyses based on nuclear ribosomal DNA sequences placed C. ryukyuense as a sister species to C. exiguum.