It's a rove beetle (Staphylinidae) - a predator that occasionally comes indoors to escape bad weather. It will not harm collections, except that it can provide a meal for serious pests like *Anthrenus*. Tony
Dr A.G.Irwin 47 The Avenues Norwich Norfolk NR2 3PH England mobile: +44(0)7880707834 phone: +44(0)1603 453524 On Thu, 13 Mar 2025 at 14:54, 'Mike van der Steenhoven' via MuseumPests < pestlist@googlegroups.com> wrote: > Dear pestlisters, > > > > I hope that you once again can help me identifying this totally black > insect. I cannot find a match on Museum pests or my books. For my untrained > eye it has some similarities with an old house borer, but I am not sure. > > Hopefully, your expertise could help me. > > > > With kind regards, > > > > Mike van der Steenhoven > > Coördinator Collections Management > > > > +31 (0) 703023497 > > +31 (0) 6 21823879 > > *m.vandersteenho...@mauritshuis.nl <m.vandersteenho...@mauritshuis.nl>* > > > > *Mauritshuis* > > Koninklijk Kabinet van Schilderijen > > Royal Picture Gallery > > > > > > > > > > > [image: Huis in de storm: Museum in oorlogstijd] > <http://mauritshuis.nl/storm> > > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pestlist+unsubscr...@googlegroups.com. > To view this discussion visit > https://groups.google.com/d/msgid/pestlist/AS8PR08MB84427C64036C3D72209A02FEEED32%40AS8PR08MB8442.eurprd08.prod.outlook.com > <https://groups.google.com/d/msgid/pestlist/AS8PR08MB84427C64036C3D72209A02FEEED32%40AS8PR08MB8442.eurprd08.prod.outlook.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "MuseumPests" group. To unsubscribe from this group and stop receiving emails from it, send an email to pestlist+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/pestlist/CAFWqZKOcKgpm%3DXJbXRb3nRK0YwjLyG8rNgLbNRj7zwAW_N8kbg%40mail.gmail.com.
