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Regarding the species, I wonder if anyone noticed any sound production by the beetle before finding them dead? Zeitschrift für Angewandte Entomologie Volume 87 Issue 1-4, Pages 417 - 429 The ash bark beetles Leperisinus fraxini and Hylesinus oleiperda: stridulatory organs, acoustic signals, and pheromone production J. A. Rudinsky1,2 and V. Vallo1,2 1Oregon State University, Corvallis, Oregon 97 331, U.S.A. 2Institute of Exp. Phytopathology and Entomology, SAV, Ivanka pri Dunaji, USSR ABSTRACT Both Leperisinus fraxini and Hylesinus oleiperda possess the elytral-abdominal type of stridulatory apparatus with the pars stridens on the posterior medial undersurface of the elytra and the plectrum in two conical processes on the 7th tergite, similar to species of Dendroctonus, Pseudohylesinus, and Hylurgops. The stress and revalry chirps of L. fraxini are single multi-pulse chirps similar in toothstrike number, duration, and rate, but the attraction chirps are double and significantly different in number and duration. Both stress and attraction chirps of Hylesinus oleiperda are double chirps and differ significantly from those of L. fraxini in several parameters. L. fraxini is a bigamous species, one male with two females, and each female occupies one arm of the biramous gallery. The female L. fraxini produces the aggregative pheromone. > > David - > > The beetle in question is commonly called the Ash Bark Beetle. I think > it's Leperisinus fraxini, instead of varius, simply because of the pattern > on the elytra. > > Tom Parker > > > > > > > -----Original Message----- > From: David Pinniger <[email protected]> > To: [email protected] > Sent: Wed, Jul 7, 2010 12:56 pm > Subject: Re: [pestlist] WG: bugs in the museum... > > > Elisabeth, > It could be a Scolytid beetle, they look like this and will emerge from > wood with bark in huge numbers. > I do not have any pictures of any with such markings. > You could ask Uwe Noldt in Germany, he is the best woodborer expert I know > in Europe. > David > > ----- Original Message ----- > From: E. Abgottspon > To: [email protected] > Sent: Tuesday, July 06, 2010 4:35 PM > Subject: RE: [pestlist] WG: bugs in the museum... > > > > Dear pestlist-Members > > Thank you very much for your fast answers from around the world! > > I was looking for pictures of the anobium punctatum and the Anthrenus > verbasci in the Internet and I dontâ think the beetles are anobii. But, > maybe Iâve got both of them and the anobii arenât beetles yetâ¦â¦. > There is a lot of âwooden powderâ on the wood⦠> L > I didntâ want to sent pictures which are too heavy⦠but unfortunately > then you see even less⦠> I send you one which is not reduced concering the size, but even then you > canât see it properly I guess. > > The beetle itself is about 3 millimeters in length. > > I called an expert who is coming today â so I will soon know more about > the specimen and the problems/risks, I hope⦠> > But Iâm glad to have some help from museum-experts as well! > > Best regards and thank you again > Elisabeth Abgottspon > > > > > Von: [email protected] > [mailto:[email protected]] Im Auftrag von James Hogan > Gesendet: Dienstag, 6. Juli 2010 17:13 > An: [email protected] > Betreff: RE: [pestlist] WG: bugs in the museum... > > > > Dear Elisabeth, > > I agree with Monika à kerlund, it is essential to get a correct > identification of the beetles. Only then will you know where they are > coming from and what action, if any, is necessary. They do not look like > Anthrenus or Anobium because they are the wrong shape and they have what > appears to be a strong spherical antennal club. But more than that it is > difficult to say because the photos are not very clear (i know it is > difficult to get good photos of small insects without specialist > equipment). Perhaps you could send specimens to your national museum to > get them identified? > > Let us know how you get on, > > James Hogan > > > > James Hogan > Hope Entomological Collections > Oxford University Museum of Natural History > Parks Road, OXFORD OX1 3PW, UK. Tel: 01865 272 978 > > > From: [email protected] [[email protected]] On > Behalf Of Monika à kerlund [[email protected]] > Sent: 06 July 2010 15:39 > To: [email protected] > Subject: FW: [pestlist] WG: bugs in the museum... > > > > Dear all, > > I have looked at a closer photo of one of the beetles. It is neither an > Anthrenus nor an Anobium punctatum . > The beetles should be identified by an entomologist. > > Best wishes > Monika à kerlund > > > > Monika à kerlund > Curator > Research Div./Preventive Conservation Group > Swedish Museum of Natural History > Box 50007 > SE-104 05 Stockholm > Sweden > Tel. +46 (0)8 519 542 01 > Fax.+46 (0)8 519 540 85 > E-mail. [email protected] > www.nrm.se > www.nrm.se/premal > > > > From: [email protected] > [mailto:[email protected]] On Behalf Of Julianne Phippard > Sent: den 6 juli 2010 15:29 > To: [email protected] > Subject: RE: [pestlist] WG: bugs in the museum... > > > Elisabeth, > > From the photos of the beetles and damage, they look like furniture beetle > to me (anobium punctatum). The larvae will have been living in the wood, > tunnelling undetected (sometimes for years) and the adults are only now > emerging, perhaps triggered by the temperature change as the wood came > into your museum or the arrival of summer weather. However, if your > gallery is fairly stable with a moderate relative humidity (under 50% RH) > then they will probably not survive to lay eggs anywhere else, and in the > UK we usually do not find infestations surviving in centrally heated > buildings because the RH goes quite low over the winter. However, if your > building is humid most of the year or damp in some areas, you should be > watching your pest traps very closely in the spring from now on. You will > not be able to tell if the larvae are living in the wood and will only > know you have a problem when the adults emerge. > > These beetles are a wood boring species and I believe they are unlikely to > attack historic natural history collections. However, we recently had a > problem with new taxidermy birds mounted on fresh wooden mounts (tree > branches), where the beetles were living in the mounts and emerged when > the specimens came into the museum. Fortunately, we had quarantined these > new acquisitions, so they did not infest any other collections. Also, we > usually freeze props and display materials that might pose a risk to our > collections to prevent the introduction of pests into our galleries or > stores. > > A fact sheet on this pest can be found here: > > http://www.collectionslink.org.uk/index.cfm?ct=assets.assetDisplay/title/Pest%20Fact%20sheet%20No%202%20Furniture%20beetle%2FWoodworm/assetId/377 > > There are fact sheets on other major museum pests on this website as well > as other information you may find helpful. > > Best of luck, > > Julie Phippard > Senior Preventive Conservator > Conservation & Scientific Research > The British Museum > Great Russell Street > London WC1B 3DG > 02073238278 > > > > From: [email protected] > [mailto:[email protected]] On Behalf Of E. Abgottspon > Sent: 06 July 2010 09:40 > To: [email protected] > Subject: [pestlist] WG: bugs in the museum... > > > Dear members of the pestlist > > Iâm the âcuratorâ of a little a Museum in Switzerland, but not > knowing much about pests. It would be great if you can help me concerning > a bug-problem. > > At the moment, we show an exhibition about different âphenomenasâ in > the near nature environment of the museum (Kuesnacht, Switzerland). > > As the subject is ânatureâ, our designers decided to use ânature > materialsâ and I agreed to do so. Now, I wouldnât do it anymore⦠> > Because: we now have bugs in the exhibition-room. A biologist told me that > they must be Anthrenus, probably Anthrenus verbasci. The grubs/worms must > be in the wood we used and the bugs are lying near the window, most of > them dead. > > As the removing of the wood would probably be the end of the exhibition > (it should actually not end before octoberâ¦), I would like to know the > risks and the problems and what else I could do instead of removing the > wood⦠> > Fortunately we donât have our collection/museum-objects in this room > except some « dead birds ». And it wouldnât be a problem, if the worms > will stay in the wood and eat this wood, in which theyâve come into the > museum. > > Do the worms eat only the bark of the wood â will it be a big problem > for the room itself (wooden ceilingâ¦), because now the bugs are lying > their eggs everywhere? And will they destroy the objects of our next > exhibition in this room? What are they eating actually? > > What do I have to do concerning the roomâ¦? > > I send you a few pictures â it would be great, if you could help me or > tell me who I could/should ask. > > A big « thankyou » in advance and please excuse my English⦠> > Best regards > Elisabeth Abgottspon > > > (grundsätzlich am Dienstag, Mittwoch und Donnerstag im Ortsmuseum) > > Ãffnungszeiten des Museums: Mittwoch, Samstag und Sonntag von 14 Uhr bis > 17 Uhr. > > ----------------------------------------------------------------------------------- > Elisabeth Abgottspon > Kuratorin/Museumsleiterin > Ortsmuseum Kuesnacht > Tobelweg 1 > 8700 Küsnacht > Tel. 0041 44 910 59 70 > > FINAL WEEKS â BOOK NOW > Fra Angelico to Leonardo: Italian Renaissance drawings > Until 25 July 2010 > TICKETS +44 (0)20 7323 8181 > www.britishmuseum.org > > Follow the British Museum on Facebook and Twitter at > www.facebook.com/britishmuseum > www.twitter.com/britishmuseum > > > > -- Please consider the environment before printing this e-mail Louis N. Sorkin, B.C.E. Entomology Section Division of Invertebrate Zoology American Museum of Natural History Central Park West at 79th Street New York, NY 10024-5192 phone: 212-769-5613 fax: 212-769-5277 email: [email protected] The New York Entomological Society, Inc. email: [email protected] web: www.nyentsoc.org Online journal from 2001 forward www.BioOne.org ------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] and in the body put: "unsubscribe pestlist" Any problems email [email protected]
