Acanthoxyla inermis (the unarmed stick insect) is an insect which was described by John Tenison Salmon 1955. Acanthoxyla inermis is included in the genus Acanthoxyla, and family Phasmatidae. No subspecies are listed. The species is a netive of New Zealand but has since been unintentionally moved to Great Britain where it has grown a stable population and is the longest insect observed, and the most common of the stick insects which have established themselves on the island.