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Tony,

Fascinating!  I also noticed that the legs seemed “hairy” as opposed to those 
on the dermestids I was looking at.  Is this a correct observation?

Best,
Matt

Matthew A. Mickletz – Manager, Preventive Conservation – Winterthur 
Museum<http://www.winterthur.org/> – 302.888.4752
IPM Working Group Co-Chair

From: pestlist-ow...@museumpests.net [mailto:pestlist-ow...@museumpests.net] On 
Behalf Of Tony Irwin
Sent: Friday, August 11, 2017 1:08 PM
To: pestlist@museumpests.net
Subject: Re: [pestlist] Beetle identification

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Casey and Matthew -
I think your suggestion that this might be a dermestid is quite reasonable, 
given the compact shape and the presence of scales on the thorax and wing 
cases. However this doesn't match any of the dermestids that I know, and there 
are other families of beetles with scales, notably the weevils and bark beetles 
(Curculionidae). In this case the asymmetric scale pattern gave it away - most 
bark beetles are rather plain, but this genus has a couple of species with such 
a pattern. I used an old book that I've had for over 50 years to make the 
initial identification, and confirmed it with an internet search for images of 
the genus. (There's a limit to what I can keep in my head!) The other clue that 
I had was that Simon mentioned dozens of beetles trying to get out. In my 
experience that most often results from a mass emergence from firewood.
Tony

Dr A.G.Irwin
47 The Avenues
Norwich
Norfolk NR2 3PH
England
mobile: +44(0)7880707834
phone: +44(0)1603 453524

On 11 August 2017 at 16:34, Mallinckrodt, Casey (VMFA) 
<Casey.Mallinckrodt@vmfa.museum<mailto:Casey.Mallinckrodt@vmfa.museum>> wrote:
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To the untrained eye this looks more dermestid-like, though perhaps I project 
my greatest problem onto any bug.  Tony, as an entomologist I trust your 
observation but wonder about the features that drew you to that diagnosis? I 
was looking at shape and scale pattern (though my amature eye).
Casey

Casey Mallinckrodt
Assistant Conservator, Sculpture and Decorative Arts Conservation
Virginia Museum of Fine Arts
804 340 1345<tel:(804)%20340-1345>

[cid:image001.jpg@01D2C25E.1D1EAE30]



From: pestlist-ow...@museumpests.net<mailto:pestlist-ow...@museumpests.net> 
[mailto:pestlist-ow...@museumpests.net<mailto:pestlist-ow...@museumpests.net>] 
On Behalf Of Matthew Mickletz
Sent: Friday, August 11, 2017 11:21 AM
To: 'pestlist@museumpests.net<mailto:pestlist@museumpests.net>' 
<pestlist@museumpests.net<mailto:pestlist@museumpests.net>>
Subject: RE: [pestlist] Beetle identification

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Wow, yeah, Tony narrowed it down!  Makes more sense.

Matt

Matthew A. Mickletz – Manager, Preventive Conservation – Winterthur 
Museum<http://www.winterthur.org/> – 302.888.4752<tel:(302)%20888-4752>
IPM Working Group Co-Chair

From: pestlist-ow...@museumpests.net<mailto:pestlist-ow...@museumpests.net> 
[mailto:pestlist-ow...@museumpests.net] On Behalf Of Tony Irwin
Sent: Friday, August 11, 2017 10:45 AM
To: pestlist@museumpests.net<mailto:pestlist@museumpests.net>
Subject: Re: [pestlist] Beetle identification

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Hi Simon
This is one of the bark beetles (Scolytinae) - I would say it is Hylesinus 
fraxini or a close relative. They are usually associated with ash trees 
(Fraxinus), and tunnel under the bark. When they occur in large numbers 
indoors, the first thing to inspect is any firewood. It is most likely they are 
emerging from that. They do not present a threat to the building or its 
contents, except that dead individuals provide food for Anthrenus larvae.
Best wishes
Tony

Dr A.G.Irwin
47 The Avenues
Norwich
Norfolk NR2 3PH
England
mobile: +44(0)7880707834<tel:+44%207880%20707834>
phone: +44(0)1603 453524<tel:+44%201603%20453524>

On 11 August 2017 at 12:52, Simon Schölch 
<s...@langelandkommune.dk<mailto:s...@langelandkommune.dk>> wrote:
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Hallo Group,

This little guy I could not find in any of my books. The specimen is from 
southern Jutland in Denmark. Dozens of individuals of this species appeared 
inside an old, inhabited farm house (timber structures, probably organic 
filling material in ceilings, all kinds of possible food sources available, but 
the source has not yet been discovered) in the course of July, flying to the 
windows to get outside. They are about 3 mm in length. Colour isn’t great in 
the pictures, but greyish-brown with off-white scale markings is still pretty 
much what it looks like in real.
Any help would be appreciated!

Best regards,

Simon Schölch
Konserveringstekniker / Dipl.-Rest.

Bevaringscenter Fyn
v/Langelands Museum

Østergade 25
5900 Rudkøbing
Tlf. + 45 63 51 63 12<tel:+45%2063%2051%2063%2012>
Tlf. + 45 63 51 63 13<tel:+45%2063%2051%2063%2013>
E-mail: s...@langelandkommune.dk<mailto:s...@langelandkommune.dk>

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