Hello Ozge, It doesn’t look at all like what is referred to as a larder beetle on these websites to me: https://extension.umn.edu/insects-infest-products-and-houseplants/larder-beetles https://hortnews.extension.iastate.edu/larder-beetle https://ento.psu.edu/extension/factsheets/larder-beetle
To me it looks like a dermestid beetle of some sort. It is hard to tell from the photo but some of the features remind me of a buffalo carpet beetle. https://museumpests.net/wp-content/uploads/2019/03/Buffalo-Carpet-Beetle.pdf If you have an increase, and don’t know where they are then looking for both an influx and that they may already be present seems the best course of action. Additional trapping by doors/hallways. If you can afford any pheromone traps, putting them out in a wide distribution and adding or moving them closer to where you are getting more “hits” on your traps so you can then pinpoint where you want to start spot checking. I had to do this for cigarette beetles at one point and it was very helpful to narrow down an area before opening and checking cabinets. We then found lots of activity, but still checked a lot of cabinets. I checked the pheromone traps 2x a week at first we had so many and adjusted from there. I hope it’s nothing, and I hope someone else has a more confident ID for you. Genevieve ================================================= Genevieve E. Tocci (she, her, hers) 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 Ozge Gencay-Ustun Sent: Thursday, September 26, 2019 4:20 PM To: [email protected] Subject: [pestlist] FW: ID an unknown larva and carpet beetle larva problem …Ahem, a while ago I had submitted the below inquiry and heard from no one, but since then I’ve seen some activity, so maybe my message fell through to cracks because I live close to the western part of the international date line (ie. most people wrap up their work days when I’m just starting)? I hope so… From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> On Behalf Of Ozge Gencay-Ustun Sent: Wednesday, September 18, 2019 10:23 AM To: [email protected]<mailto:[email protected]> Subject: [pestlist] ID an unknown larva and carpet beetle larva problem Dear Pestlisters, Do you think this is a larder beetle larva? It is found in our conservation lab storage where there are leather scraps and other synthetic material along with paper etc. This is in one of our campuses, where I also found a live carpet beetle larva. Also we have been finding an influx of carpet beetle larva in our other campus, too. I found 7 carpet beetle in every 130 trap this year (1:18.5) and 5 in 130 trap (1:26) in this month only and two of them were alive. The area is 100 000 sq feet (~9300 sq meter). How worried should I be? It is a large area so how do I find any infested objects if that exists (in the past I found two infested objects after two different drugstore beetle outbreaks, but those were in our former storage area which was way smaller). The larvae seem to be concentrated on collection areas and none yet found in the offices or conservation labs. Are they trying to find food, or have they found the food source? I’d appreciate any insight. Thank you for your time, Özge Gençay-Üstün Associate Conservator AUTRY MUSEUM OF THE AMERICAN WEST 4700 Western Heritage Way Los Angeles, CA 90027-1462 Direct: 323.495.4328 • E-mail: [email protected]<mailto:[email protected]> Current exhibitions→TheAutry.org<https://urldefense.proofpoint.com/v2/url?u=http-3A__theautry.org_exhibitions&d=DwMFaQ&c=WO-RGvefibhHBZq3fL85hQ&r=EYdhJ0HrhAMcA2aVQ-I4N7lml00zxsXPbHYeP7843No&m=LtozsOImXoIdkpdLjHNVnZSZQsZ8in9CwlVIeCPebsE&s=uX2jXXQK7LdduS0ODGlhUlBwOCrr7ANnrRdDn283pug&e=> . -- 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 on the web visit https://groups.google.com/d/msgid/pestlist/CO2PR0801MB213438B75573F10AED60F27680860%40CO2PR0801MB2134.namprd08.prod.outlook.com<https://urldefense.proofpoint.com/v2/url?u=https-3A__groups.google.com_d_msgid_pestlist_CO2PR0801MB213438B75573F10AED60F27680860-2540CO2PR0801MB2134.namprd08.prod.outlook.com-3Futm-5Fmedium-3Demail-26utm-5Fsource-3Dfooter&d=DwMFaQ&c=WO-RGvefibhHBZq3fL85hQ&r=EYdhJ0HrhAMcA2aVQ-I4N7lml00zxsXPbHYeP7843No&m=LtozsOImXoIdkpdLjHNVnZSZQsZ8in9CwlVIeCPebsE&s=v-uoDj0_Ep6foPwXnl5_VnAx0khaISMNGvFo_0UxLHA&e=>. -- 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 on the web visit https://groups.google.com/d/msgid/pestlist/BN8PR07MB63373BFE548CB6DED9C858BBD5860%40BN8PR07MB6337.namprd07.prod.outlook.com.
