In a recent publication (Hazzi & Hormiga 2021) we demonstrated that there are two species under the name of the ctenid spider Phoneutria boliviensis (F.O. Pickard-Cambridge, 1897) and used the name Phoneutria depilata (Strand, 1909) for this second species, which in the past had been treated as a junior synonym of boliviensis . We proposed that “ Ctenus peregrinoides Strand, 1910 ” was a new junior synonym of Phoneutria depilata . We note here that such synonymy is an error. Strand did not use the name “ Ctenus peregrinoides ” as valid when he proposed it (valid as opposed to, for example, “if this were a new species, here is a name”), which means that his provisional name is not available for nomenclatural purposes. Thus, formally treating “ peregrinoides” as a junior synonym is inconsequential because Strand’s name is not available in a nomenclatural sense