Tetramelas pulverulentus is a species of lichenicolous (lichen-dwelling) fungus in the family Caliciaceae.

[2] It was originally described as a new species by Martino Anzi in 1860.

The type specimen was collected in Italy.

[3] Swedish lichenologists Anders Nordin and Leif Tibell transferred it to the genus Tetramelas in 2005 based on molecular phylogenetic analysis.

[4] It is closely related to Tetramelas phaeophysciae but differs from that species in its ascospores, which have three septa.