I forgot to mention, the larval skins appear to be old black carpet beetle
castings. Tom -----Original Message-----
From: Dee Stubbs-Lee <[email protected]>
To: [email protected] <[email protected]>
Sent: Tue, Aug 13, 2019 1:50 pm
Subject: RE: [pestlist] need help with identification of beetle from damage on
furniture and larval skins
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{} #yiv8740646169 Thanks, Tom! It is certainly the worst case of beetle damage
I have encountered to date. It is encouraging that you are also thinking it is
old damage. I, too, had also wondered about possible past storage on a damp
surface – anything is possible, although there is no obvious musty odour or
fungal growth currently. I should have mentioned that the legs appear to have
had casters or other secondary feet at one time, but these are no longer with
the piece. There are smaller flight holes scattered throughout the whole piece
(mostly in drawer bottoms) without any associated frass remaining, but this
damage around the leg was far more substantial. Dee Dee Stubbs-Lee, CAPC,
MA Conservator / Restauratrice New Brunswick Museum/ Musée du Nouveau-Brunswick
277 Douglas Avenue Saint John, New Brunswick E2K 1E5 Canada (506)643-2341
From: 'bugman22' via Museumpests [mailto:[email protected]]
Sent: Tuesday, August 13, 2019 2:26 PM
To: [email protected]
Subject: Re: [pestlist] need help with identification of beetle from damage on
furniture and larval skins Dee - Knowing where you are located, the fact
some of the wood appears to be hardwood, and the large diameter of the exit
holes and galleries, I would guess it's extremely old deathwatch beetle. I
think the desk probably either sat in water or at least a very moist area for
an extended period of time before it was salvaged and ended up at your place.
Could it have been stored in an old barn? or similar situation? This type of
beetle attacks wood damaged by fungal invasion. I've rarely seen it in my
43-year career. Tom Parker -----Original Message-----
From: Dee Stubbs-Lee <[email protected]>
To: [email protected] <[email protected]>
Sent: Tue, Aug 13, 2019 11:56 am
Subject: [pestlist] need help with identification of beetle from damage on
furniture and larval skins Hi all, On Friday, one of my colleagues was trying
to shift a slant front desk a few inches on a carpeted surface. One of the legs
caught on the carpeting and cracked readily . (We do know that neither
carpeting in storage areas or moving furniture solo is good practice, but
sometimes we don’t live in an ideal world!). Upon examination, it was apparent
that the damaged area had previously been heavily compromised by insect damage.
The desk had been frozen upon arrival at the museum in 2012, as per our normal
IPM procedures, but the artifact had not yet been cleaned or thoroughly
examined, so we weren’t aware of the insect damage, which is concentrated on
the underside of the furniture and so not readily visible. I believe the
infestation was not currently active, as during cleaning and careful
examination I found no insect bodies or live larvae, however I did find two
cast larval skins. There was also plenty of frass, tunnels and flight holes.
The furniture came to us from a collector in New Brunswick, Canada. The desk is
dated to the last quarter of the eighteenth century, and is believed to be of
British or American origin; not much else is known about its history. It is
mahogany veneer over a variety of secondary woods. Can you help us identify
which beetle species caused the damage? Dee Dee Stubbs-Lee, CAPC, MA
Conservator / Restauratrice New Brunswick Museum/ Musée du Nouveau-Brunswick
277 Douglas Avenue Saint John, New Brunswick E2K 1E5 Canada (506)643-2341
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