Hi Cécile for xylophageous insects (e.g. termites ) there should be exit holes on the wood. But the droppings (frass) do not look typical like from termites. For me, it seem more like old frass from keratophageous insects (e.g. dermestid larvae)
what would be realistic for skin and coat But it is difficult to say just with this two pictures Just one idea: One could take a small sample and set it alight in a Petri dish in the laboratory, where the keratin smells distinctly different from wood. Gesendet von Outlook für iOS<https://aka.ms/o0ukef> Best Stephan Stephan Biebl Ingenieurbüro für Holzschutz Mariabrunnweg 15 83671 Benediktbeuern Germany https://www.holzwurmfluesterer.de/ https://insectactivitydetectionsystem.de/ https://museumsschaedlinge.de/ ________________________________ Von: [email protected] <[email protected]> im Auftrag von Costa Cécile <[email protected]> Gesendet: Sunday, November 2, 2025 5:16:09 PM An: 'Echo' via MuseumPests <[email protected]> Betreff: [PestList] Frass identification Hello everybody, We are currently working on two arched harps that have signs (damages, frass) of past infestation from keratophageous and xylophageous insects and we wanted to know if by chance someone could be able to identify the pest species based on the frass we found (see attached image) ? Those objects are harps from Congo, stocked in Switzerland for more than 15 years. Wood species are unknown. Skins are antelope and monitor lizard. For stitching (image "frass 1"), animal fibers were used, no further identification was made. Thank you for your help, Best regards, Cécile Costa Student at Haute Ecole Arc (Neuchâtel, Switzerlad) -- This PestList and the MuseumPests.com web site are made possible due to the talent, intelligence, devotion and donations of hundreds of volunteers. Your donation to help this resource continue would be greatly appreciated. Please consider a donation donating at https://givebutter.com/MuseumPests To unsubscribe from this group, send email to [email protected] --- 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 [email protected]<mailto:[email protected]>. To view this discussion visit https://groups.google.com/d/msgid/pestlist/ZR0P278MB0974F5AE98F83E1FAA7EFAB3CEC6A%40ZR0P278MB0974.CHEP278.PROD.OUTLOOK.COM<https://groups.google.com/d/msgid/pestlist/ZR0P278MB0974F5AE98F83E1FAA7EFAB3CEC6A%40ZR0P278MB0974.CHEP278.PROD.OUTLOOK.COM?utm_medium=email&utm_source=footer>. -- This PestList and the MuseumPests.com web site are made possible due to the talent, intelligence, devotion and donations of hundreds of volunteers. Your donation to help this resource continue would be greatly appreciated. Please consider a donation donating at https://givebutter.com/MuseumPests To unsubscribe from this group, send email to [email protected] --- 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 [email protected]. To view this discussion visit https://groups.google.com/d/msgid/pestlist/AM7P189MB1137A1EB6C78CEAED163F9DCCAC6A%40AM7P189MB1137.EURP189.PROD.OUTLOOK.COM.
