Hi Mike, I have no advice on the anoxia problem. Maybe if you were doing it in a bubble or special room somewhere it would be less problematic?
I wish we could offer our freezer, but we are a bit too far to travel for you. I agree that the adults 1-3 and larvae 1 look like Anthrenus verbasci (Varied carpet beetle). The second larvae does look a bit like Attagenus unicolor (Black carpet beetle), but I bet someone else will know better. Good luck! Genevieve ================================================= Genevieve E. Tocci Senior Curatorial Technician Harvard University Herbaria 22 Divinity Ave., Cambridge, MA 02138 U.S.A. Phone: 617-495-1057 Fax: 617-495-9484 [email protected]<mailto:[email protected]> From: [email protected] <[email protected]> On Behalf Of [email protected] Sent: Thursday, February 14, 2019 10:00 AM To: [email protected] Subject: Re: [pestlist] Re: In-situ heat treatment of bird diorama - thoughts? Hi everyone, This is a follow-up to my previous email about trying a heat treatment on our bird diorama. First of all, thank you to everyone who responded with suggestions. Since my previous email, our infestation and search for a treatment method has spiraled into a completely different issue. After a very productive off-list email exchange; reconsidering the situation many, many times; and positive conversations with the college’s chemistry lab manager and safety officer, we had set aside the heat idea and settled on trying an in-situ continuous flow anoxia treatment using liquid nitrogen. Before giving us the final go-ahead, however, our perhaps overly zealous safety officer, who loved the plan and was psyched we were not using fumigants, decided to reach out to the director of Maine’s Board of Pesticide Control to ensure we weren’t violating any regulations. The state director, who was seemingly completely unfamiliar with the concept of anoxia, reached out to the EPA for guidance. The state’s final response was that in upholding FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act), they would consider liquified nitrogen, or any compressed gas used in an anoxic treatment, to be an unregistered pesticide. They insist that we hire a licensed pest control applicator who must apply a product from a list of pesticides registered for the control of dermestids in the state of Maine. (Obviously we are not doing this.) I have since had a series of frustrating and unproductive email exchanges trying to get an answer as to why nitrogen used for anoxia is a pesticide but plastic molded into the shape of a fly swatter is not. I’ve also reached out to (and had to explain the process of anoxia to) other state employees, including the state’s IPM entomologist, to no avail. I wonder if anyone has had a similar experience elsewhere and whether they were successful in persuading their state to change its ways? I know that anoxic treatments have been performed by/for state repositories in other parts of the country. Were these done with state pesticide regulatory approval or without asking for permission? Going forward, I wonder whether working group contributors would be interested in advocating/pulling together regulation resources onto museumpests.net. (I was ironically directed to the website by state employees.) Or perhaps others are happy functioning under the radar and would prefer to not rock the boat? In any event, we will probably wait until we have time to disassemble the diorama and rent or borrow a freezer big enough to fit the pieces. Anyone in northern New England have a walk-in freezer? Finally, I’d love some help IDing our critters. It looks like adult1-3 and larva1 are Anthrenus verbasci? or maybe coloratus? And larva3 is different, my only guess is Attagenus unicolor. The adult is 3mm, the larvae casings all 5mm or less. Thanks! Mike Quigley Assistant Curator The Peary-MacMillan Arctic Museum and Arctic Studies Center Bowdoin College 9500 College Station Brunswick, ME 04011 [email protected]<mailto:[email protected]> (207)725-3305 ________________________________ From: 'bugman22' via Museumpests <[email protected]<mailto:[email protected]>> Sent: Thursday, January 10, 2019 3:35 PM To: [email protected]<mailto:[email protected]> Subject: Re: [pestlist] Re: In-situ heat treatment of bird diorama - thoughts? Mike - I do not think 2 hours is sufficient to kill all stages with heat. Carpet beetle larvae tend to chew their way into the dark interiors of stuffed animals. Carpet beetle larvae often enter the animal's interior via the posterior vent and also the beak nostrils. I've even seen webbing clothes moth larvae emerging from cocoons in the nostrils of an armadillo ( see photo). Since the exhibit case is fairly tight, why not give some thought to No-Pest Vapona strips hung high in the exhibit. After one month they can be removed. The Vapona fumes kill all stages of any insect. Tom Parker -----Original Message----- From: Voron, Joel <[email protected]<mailto:[email protected]>> To: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Sent: Thu, Jan 10, 2019 10:13 am Subject: [pestlist] Re: In-situ heat treatment of bird diorama - thoughts? Since none of this is display is precious I would wonder if thorough vacuuming and lightly dusting with ultra fine silica gel dust would knock them out. Maybe add a few pheromone traps as well. any thoughts from the group about that approach?? JTV Joel Voron Colonial Williamsburg Foundation Conservation Dept. Integrated Pest Management Office 757-220-7080 Cell 757-634-1175 E-Mail [email protected]<mailto:[email protected]> [1474552137245_IMG_0499.JPG] ________________________________ From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> on behalf of [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Sent: Thursday, January 10, 2019 9:55:27 AM To: [email protected]<mailto:[email protected]> Subject: [pestlist] In-situ heat treatment of bird diorama - thoughts? Hello Pestlist, We have recently discovered a significant dermestid infestation of a bird diorama and are considering treatment options. We are leaning towards an in-situ heat treatment, and I’d love to get some feedback on our initial thought process and plan. The diorama (see attached photos) was originally installed in an office in Massachusetts in the 1980s. It was disassembled and reinstalled in our museum in Maine about a year and a half ago. It is currently installed in a very well-sealed, approximately 7.5 x 6.5 x 4 ft., climate-controlled exhibit case (in a non-climate-controlled gallery) built by our talented exhibits coordinator. It was installed before I joined the staff here, and I was told that the individual diorama elements were inspected, but not treated, for insects before installation. The diorama itself is valued for education and exhibition, but the objects displayed within are not considered to be of particularly significant scientific or historic value. The diorama is lovely to look at, but was not designed with ease of inspection, access, or treatment in mind. Most of the individual birds cannot be removed (or even fully inspected or cleaned) without complete disassembly, which we do not have the time or labor to invest in currently. We are therefore looking at an in-situ treatment. The infestation was discovered on a few of the more easily inspected birds. We’re still working on species identification, but we’d like to treat for all species anyway, based on the assumption that there may be multiple species we haven’t found yet lurking on the harder to inspect birds. The case is very well sealed, but not tight enough for an in-situ anoxic treatment, and it’s not possible to seal an envelope around the entire case. An in-situ low temperature treatment is not feasible for several reasons. We are therefore considering an in-situ heat treatment, piping in heat from an industrial heat gun, monitoring the temperature and humidity with multiple data loggers inside the case, and piping in moisture from a cool mist humidifier as necessary to maintain humidity during the heating phase. We would raise the temperature inside the case to 55 C and hold it there for 2 hours. Because the insects are basically at surface level (perhaps under a few feathers) I’m thinking 2 hours should be sufficient time for heat penetration. During the cooling phase, we would pipe in seasonally dry ambient gallery air as necessary to prevent the RH from rising drastically within the case. We would ideally try to keep the RH within +/-5% throughout the process, but realistically maybe +/-10%. The materials comprising the diorama are: Taxidermy birds prepared in the mid-1980s Plant specimens Wood Paint on Canvas Plaster Wire mesh Leather And the interior of the case itself is lined with MDO with multiple coats of Camger, plus the glass panel at the front. None of us here have ever attempted anything like this before, so I’m curious to hear what people think. Does this sound like a reasonable approach? Is this a terrible idea? What haven’t we considered? I’m familiar with Tom Strang’s temperature/exposure data, basic thermal insect control literature, Thermo Lignum’s treatment concept, and museumpests.net. But if anyone has any particularly relevant literature or case studies to recommend, please let me know. Thanks for your help, Mike Mike Quigley Assistant Curator The Peary-MacMillan Arctic Museum and Arctic Studies Center Bowdoin College 9500 College Station Brunswick, ME 04011 USA [email protected]<mailto:[email protected]> (207)725-3305 -- 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 post to this group, send email to [email protected]<mailto:[email protected]>. 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