It’s consistent with the sort of damage I’ve seen with silverfish as well. Conventional wisdom says silverfish are associated with high RH, which is generally true, but I’ve also often collected live ones in surprisingly dry ambient conditions. One tip to keep in mind if you are using sticky blunder traps to monitor for silverfish activity: the silverfish often get stuck to the sticky strip on the underside of the trap (the one that holds the trap to the floor) as well as or even instead of the sticky pad inside the trap, so be sure to check the underside.
Good luck! Dee Dee A. Stubbs-Lee, MA, FIIC, CAPC Conservator / Restauratrice New Brunswick Museum 277 Douglas Avenue Saint John, New Brunswick E2K 1E5 Canada (506) 643-2341 From: pestlist@googlegroups.com [mailto:pestlist@googlegroups.com] On Behalf Of Anderson, Gretchen Sent: Thursday, February 23, 2023 12:38 PM To: pestlist@googlegroups.com Subject: [PestList] RE: silverfish damage This does look like silverfish damage. The hole is consistent with damage I have seen and it looks like there is grazing as well. Do as Volker suggests, and look for thin spots or trails. This indicates grazing. What are your environmental conditions? Silver fish much prefer warmish, humid areas. Do you have a water source (sink, drain?) in the area. To determine if it is active or not, and to properly identify the culprit, you should monitor. Place blunder traps (sticky traps) in the area around where you suspect activity, and under sinks, around the edge of the room. If you are not catching any insects then it is probably inactive. Good idea to continue monitoring though. Good luck Gretchen Anderson Conservator & IPM manager Carnegie museum of Natural History From: pestlist@googlegroups.com<mailto:pestlist@googlegroups.com> <pestlist@googlegroups.com<mailto:pestlist@googlegroups.com>> On Behalf Of Hingst, Volker Sent: Thursday, February 23, 2023 6:10 AM To: pestlist@googlegroups.com<mailto:pestlist@googlegroups.com> Subject: [PestList] silverfish damage CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. dear mike, I think, it’s hard to tell – if a damage is recent or historic. you could ask a paper-conservator. if the paper is pretty dusty and the feeding sites aren’t – than they might be recent… I think the damage is from a silferfish! hold the paper in front of a light source and look from the other side, then you should see the thiner parts in the papersurface… best regards V o l k e r H i n g s t Dipl.-Restaurator Volker Hingst IPM-Koordinator --------------------------------------- LVR - Archivberatungs- und Fortbildungszentrum Technisches Zentrum / Papierrestaurierung Ehrenfriedstr.19 50259 Pulheim Tel.: 02234-9854-236 Fax: 0221-8284-2479 E-Mail: volker.hin...@lvr.de<mailto:volker.hin...@lvr.de> Internet: www.afz.lvr.de<https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.afz.lvr.de%2f&c=E,1,I7NLZkujC-PBzf0JKh9Lc1LvcBxCPOdRUw9vPWRuL1hvY9LYhi9iAbkQrgmdbEfTq97cmoWVH7g7Z2gl4HRNsinIc8v8aIDlnVXT2rhObYpY5hblA_BfoVCScobd&typo=1> Von: pestlist@googlegroups.com<mailto:pestlist@googlegroups.com> <pestlist@googlegroups.com<mailto:pestlist@googlegroups.com>> Im Auftrag von Mike van der Steenhoven Gesendet: Donnerstag, 23. 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