The booklice are a *Dorypteryx *species. Usually it is found in relatively low numbers - and has been associated with artworks on paper, rather than natural history collections. The first photos also show a young silverfish (*Lepisma *sp.), so there may be a humidity issue where it was found. The beetle on the right-hand side of the third photo (I can't see a fourth), is most likely an *Adistemia *species, again something more likely to be found in damper conditions. Tony
Dr A.G.Irwin 47 The Avenues Norwich Norfolk NR2 3PH England mobile: +44(0)7880707834 phone: +44(0)1603 453524 On Wed, 7 Dec 2022 at 13:56, 'Edgley Cesar' via MuseumPests < pestlist@googlegroups.com> wrote: > I also think they’re booklice. > > The beetle is hard to tell from the photo but resembles plaster beetles > e.g. Adistemia or Dienerella > > > > > > > > Edgley A. César – Curator, Diatoms > > Natural History Museum | Cromwell Road | SW7 5BD | London – UK > > > > *From:* pestlist@googlegroups.com <pestlist@googlegroups.com> *On Behalf > Of *Mike van der Steenhoven > *Sent:* 07 December 2022 13:44 > *To:* pestlist@googlegroups.com > *Subject:* [PestList] Determination > > > > Dear Pestlisters and colleagues, > > > > I hope you can help me identify the insects shown in these pictures. They > are miniscule, they look like booklice but I am not shure. > > > > On the 4th photograph shows a beetle, but I cant figure out if this one > is a treath to our collection our building or not. > > > Ass always your help will be most appreciated. > > > > With kind regards, > > > > *Mike van der Steenhoven* > > Coördinator Collections Management > > > > +31(0)70 3023497 > > +31(0) 6 21823879 > > m.vandersteenho...@mauritshuis.nl > > > > *Mauritshuis* > Koninklijk Kabinet van Schilderijen > *Royal Picture Gallery* > > > > > > > > [image: In volle bloei] > <https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmauritshuis.nl%2Fmanhattanmasters&data=05%7C01%7Ce.cesar%40nhm.ac.uk%7Ce3bf567820c64a7437aa08dad8592a34%7C73a29c014e78437fa0d4c8553e1960c1%7C1%7C0%7C638060174797654723%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2FZPOntH0heUM7iSxsZk02tRLM%2Bn2s4HJ980NsezNvtM%3D&reserved=0> > > > > > > -- > 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 on the web visit > https://groups.google.com/d/msgid/pestlist/AS8PR08MB844271263AD0A0B2875020F1EE1A9%40AS8PR08MB8442.eurprd08.prod.outlook.com > <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgroups.google.com%2Fd%2Fmsgid%2Fpestlist%2FAS8PR08MB844271263AD0A0B2875020F1EE1A9%2540AS8PR08MB8442.eurprd08.prod.outlook.com%3Futm_medium%3Demail%26utm_source%3Dfooter&data=05%7C01%7Ce.cesar%40nhm.ac.uk%7Ce3bf567820c64a7437aa08dad8592a34%7C73a29c014e78437fa0d4c8553e1960c1%7C1%7C0%7C638060174797654723%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=XCQx6TMjJayRqMblAG50BqG%2Fm%2B65gx5UvX6WeQ0Abtc%3D&reserved=0> > . > > -- > 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 on the web visit > https://groups.google.com/d/msgid/pestlist/LO0P265MB33225D00533D4DAD5841771DA01A9%40LO0P265MB3322.GBRP265.PROD.OUTLOOK.COM > <https://groups.google.com/d/msgid/pestlist/LO0P265MB33225D00533D4DAD5841771DA01A9%40LO0P265MB3322.GBRP265.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 on the web visit https://groups.google.com/d/msgid/pestlist/CAFWqZKM4wH-O9s1QOc9%2BE1U2VynmWiReip1junxoP9KfufGc9g%40mail.gmail.com.
