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Hi Donna, Jan 28, 2016
I continue to recommend trying to get a specimen or preferably =
specimens.
According to sources I have at hand Lyctus is restricted to hardwood =
and surely no one would use hardwood for support posts. Hardwood will =
bend under the force of gravity. These sources are American Beetles Vol =
2, 861 pp,2002; Dillon & Dillon 1961 and
https://edis.ifas.ufl.edu/ig119
The latter says that Lyctinae are usually found in wood less than 5 =
years old. Note that none of the larvae pictured in the latter resemble =
your photo.
=20
It is always possible that these three sources are incorrect.=20
But in any case it has been accepted for many years that the best =
way to know how many teeth a horse has is to count them-- after first =
finding a horse.
Yt, DW, Kentville
----- Original Message -----=20
From: Donna Crossland=20
To: naturens@chebucto.ns.ca=20
Sent: Wednesday, January 27, 2016 8:10 PM
Subject: [NatureNS] strange wood boring insect destroying -thx to Bev =
and Jeff!
Thanks go out to Bev Wigney and Jeff Ogden for confirming the =
powderpost beetles of the genus Lyctus. Very interesting. I hope they =
do not spread easily.
=20
I see that all three species are termed =E2=80=9Cadventive=E2=80=9D =
species in Majka=E2=80=99s paper. For some reason I have not come =
across this term before, and I see that it is used differently than the =
term =E2=80=98invasive species=E2=80=99, though both terms refer to =
introduced species that are running amuck in our ecosystems (our =
domesticated ecosystem in this case).
=20
Wikipedia- the definition of choice I think -
The later and more limited concept is that: An adventive species is =
one that has arrived in a specific geographic area from a different =
region; however, its population is not self-sustaining. Population =
numbers are only increased through re-introduction. After some time, an =
adventive species may become naturalized OR some populations do not =
sustain themselves reproductively, but exist because of continued influx =
from elsewhere. Such a non-sustaining population, or the individuals =
within it, are said to be adventives
=20
Great work by our Chris Majka, I should add. I sometimes worry about =
who=E2=80=99s keeping track of all this important species information. =
He=E2=80=99s our beetle guy!
=20
Many thanks!
=20
Donna
=20
=20
From: naturens-owner@chebucto.ns.ca =
[mailto:naturens-owner@chebucto.ns.ca] On Behalf Of bev wigney
Sent: January-26-16 9:11 PM
To: naturens@chebucto.ns.ca
Subject: Re: [NatureNS] strange wood boring insect destroying a NS =
home
=20
A bit more info. I see that there are 3 species of Lyctinae in Nova =
Scotia. See pages 5, 19 & 20.
=20
=
http://www.chebucto.ns.ca/Environment/NHR/PDF/Bostrichiformia-Majka.pdf=20
The Derodontidae, Dermestidae, Bostrichidae, and Anobiidae of the =
Maritime Provinces of Canada (Coleoptera: Bostrichiformia)
CHRISTOPHER G. MAJKA
Nova Scotia Museum, 1747 Summer Street, Halifax, Nova Scotia, Canada =
B3H 3A6. E-mail: c.majka@ns.sympatico.ca=20
=20
=20
=20
On 2016-01-26, at 8:31 PM, Donna Crossland <dcrossland@eastlink.ca> =
wrote:
A colleague who lives in Caledonia, brought in some skeletonised =
wood from her home last week. We could not find any wood boring insects =
in the pieces she brought in, but I thought I would submit this mystery =
to the masses. The holes are very tiny (see photos), quite unlike those =
of carpenter ants, and the sawdust is exceedingly fine. Most =
alarmingly, she has had to replace the wooden support posts in her =
basement (now made of steel), and tells me that this same beast is now =
chewing its way through her hardwood floors upstairs. She is guessing =
that it is in other supporting structures of her home. Ykes. =20
=20
Anyone have any ideas? Photos taken as best I could. I suspect her =
home will require some sort of treatment. =20
=20
https://www.flickr.com/photos/137759708@N03/?
=20
Many thanks in advance.
=20
Donna Crossland
=20
=20
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7294 / Virus Database: 4522/11495 - Release Date: =
01/27/16
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