Now Buglife and the National Trust are launching a survey to help work out where the last four species of oil beetle are living.
Children's BBC(Mar 25, 2011)
In the last hundred years, half of the country's eight native species of oil beetle have disappeared.
BBC(Mar 25, 2011)
At this time an Oil beetle was seen prowling about the holes.
Packard, A. S. (Alpheus Spring), Our Common Insects—A Popular Accoun...(2010)