In some species however, wings that are vestigial in the sense of not retaining any function related to flight, may have other functions, such as organs of aposematic display in some Orthoptera and Phasmatodea.
It may be mentioned in passing that the majority of the multiple-classifying languages in North Australia used prefix.al forms to mark the classes, but a few, such as Worora and Unggumi in the Northern Kimberley Division of Western Australia, have vestigial suffixes, while a few on the Barkly Tablelands in the eastern part of the Northern Territory use only suffixes.
In a few of the most primitive insects (the Archaeognatha), the metasomal segments bear small, articulated appendages called "styli", which are often considered to be vestigial.
The posterior tibiae also bear articulated spines near their tips, plus spurs longer than the hind tarsi, which may be entirely absent or else are at best vestigial, having only a single segment.