Xenylla grisea is an apparently common and widespread species with a furca in which the mucro/dens are not separated (Fig. 1) and the mucro has a narrow tip with a small lamella. However, literature records need to be confirmed as several specimens of Xenylla grisea in the NHML collection were labelled with the names of other species. It occurs under bark and in leaf litter and other organic debris. In Xenylla corticalis and Xenylla grisea, seta m3 is absent from th2 and th3 (present in other Xenylla species). The differences in the shape of the mucro serve to separate Xenylla corticalis from Xenylla grisea.