Rare Short-Necked Oil Beetle Found in Wales Again

A rare species of beetle has been rediscovered in Pembrokeshire, marking its triumphant return to Wales after an absence of nearly 60 years. Conservationists have spent three years searching the area before finally unearthing larvae of this remarkable insect.

The Short-Necked Oil Beetle relies heavily on solitary bees for its lifecycle and requires a very specific habitat to survive, featuring thick vegetation for shelter and dense flower coverage. Following 1948, the species was unrecorded in the UK for nearly six decades as rampant habitat loss pushed them to the brink of extinction.

Last year, surveys at Castlemartin uncovered only dead adults, sparking severe concerns about the beetle's future in the region. However, after persistent searching this year, experts discovered larvae in a small pocket of the site, indicating successful reproduction among hatchlings from a larger brood.

"very exciting"

Anne Hobbs, Bumblebee Conservation Trust

Anne Hobbs from the Bumblebee Conservation Trust stated that the evidence strongly suggests the species is breeding in Wales once again. Classified as nationally rare across Great Britain and listed as vulnerable on the IUCN Red List, adults can grow up to 24mm in length with a lifespan of roughly one year, appearing active between March and June in coastal grasslands.