Yes, it was 'collected' in the 19th century when European 'explorers' merrily trampled through other people's countries acquiring their stuff and carrying it back and displaying it. Using terms like 'witch doctor' and 'shaman' (slightly less awful, but still weighted down with cultural ignorance). Ireland being part of the UK at the term benefitted from the activities of sundry such (including Captain Cook).
No Irish Druid (comparable people) material objects that we can identify as such survive, but they are said to have had feathered cloaks. If you wanted fat beetlewing tassels made from Irish beetles you'd need to murder cockchafers and water beetles. To get bright green you'd have to go for Dock beetles, they are gorgeous but little. I think there's universal condemnation of doing that sort of thing now, under CITES legislation or some such.