Tichodroma is the only known genus in the family Tichodromidae.

Initially, Linnaeus placed Tichodroma in the family Certhiidae, along with the treecreepers.,[1] while other authorities have placed it the nuthatch family Sittidae, as its own subfamily.

A 2016 phylogenetic study of members in the superfamily Certhioidea suggests it is a sister of the Sittidae.

[2] Tichodromidae: wallcreeper – 1 species Sittidae: nuthatches – 29 species Salpornithidae: spotted creepers – 2 species Certhiidae: treecreepers – 9 species Polioptilidae: gnatcatchers – 22 species Troglodytidae: wrens – 96 species The wallcreeper (Tichodroma muraria) is the only extant species, but the extinct Tichodroma capeki is known from the Late Miocene of Polgardi, Hungary.

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