The world’s largest earwig has officially been declared extinct.

The St Helena Giant Earwig (Labidura herculeana) could attain lengths of up to eight centimetres.

Previously found in Horse Point Plain, a protected area on St Helena Island, the last confirmed live adult of this insect was seen in May 1967.

The International Union for the Conservation of Nature has now declared the species extinct, changing its status from Critically Endangered.

Since the early 1960s, its habitat has been degraded, with stones that it lived under being removed from the island by the construction industry.

The earwig may also have been increasingly eaten by predators such as mice, rats and invasive insects.

The giant earwig was first described by a Danish entomologist in 1798. It was then forgotten about until new specimens were found in 1913, then in 1959.

Repeated visits to the island since have failed to find any signs of its survival.

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The world’s largest earwig, the 8cm-long St Helena Giant Earwig, has been declared extinct by @IUCNRedList. Last seen in 1967. Via @BBCEarth