ABOUT TO KNOW WHICH INSECT HOW TO DAMAGE Architectural Conservation.

1. SUBMITTED BY
Sayeem Abdul Hakim
ID : 156003
4th Year 2nd Semester
Department of Architecture
ASSIGNMENT 02
Arch-4523
Architectural Conservation
(Part- A)
SUBMITTED TO,
Salima Afroz
Assistant Professor,
Department of Architecture
DHAKA UNIVERSITY OF ENGINEERING & TECHNOLOGY,
GAZIPUR
Assignment : Insect and other
pests as causes of decay

2. Subterranean
Termites FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Nest in
the ground.
2. Much more
dangerous
3. Have a soft
white body with
no eyes
4. When subterran
ean termites eat
wood, they fill it
with soil to help
maintain the
humidity.

3. Dry
Wood
Termites FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Leave frass in
piles near areas
where they are
active
2. They don’t
require a
connection with
the soil or above
ground
moisture.
3. Will seek out
sound or non-
decayed wood in
which to live
4. All of the
moisture they
need is obtained
from the wood
they consume or
through
metabolism.

4. Damp
Wood
Termites FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Infest wood with
a high degree of
moisture
2. Typically
associated with
wood decay
3. Damp wood
termite colonies
are entirely
wood-dwelling
and most species
don’t require
contact with the
soil.
4. Tend to leave it
inside their living
areas or stuck to
the walls of
the wood they
are eating.

5. Lymexylidae FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Also known as
ship-timber
beetles
2. Causing decay
in living
trees and
damaging timber
structures such
as houses and
ships.
3. Pests to forest
trees such
as chestnut,
poplar, and oak,
and can be
found worldwide
4. Wood boring
activities occur
primarily in the
larva stage,
5. The larvae
damaging both
sapwood and
heartwood.

6. Ambrosia
Beetles FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Excavates a
tunnel in which
it releases
spores of its
fungal symbiont
2. Ambrosia fungi
are typically
poor wood
degraders, and
instead utilize
less demanding
nutrients
3. The majority of
ambrosia beetles
colonize xylem
(sapwood or
heartwood) of
recently dead
trees, but some
attack stressed
trees that are
still alive, and a
few species
attack healthy
trees.

7. Clytinid
Long-horn
Beetle FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Adult beetles eat
leaves and twigs.
2. Young larvae
tunnel beneath
the bark and
feed on phloem
(the inner bark)
of the branches
and trunk
3. They grow, the
larvae tunnel
deeper into the
tree through the
sapwood.
4. Adults are active
from summer to
mid-fall.
5. Females dig
crater-shaped
holes ½ inch in
diameter into
bark to deposit
their eggs.
6. Larval feeding
galleries or
tunneling may
be visible on
severely
impacted trees.
7. It takes three
years for the alb
to mature

8. Siricid
Wood-wasps FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Damage—Wood
wasps most
frequently attack
weakened,
dying, and
recently cut
or killed
trees and can
attack freshly cut
timber before it
is dried.
2. They are
particularly
attracted to fire-
damaged trees
3. For this reason,
they are well-
known to
wildland
firefighters.

9. House
longhorn
beetle
(Hylotrupes
Bajulus) FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Mainly infest
moist and partly
decayed
softwood timber
that has
moisture content
over 14%.
2. They are more
likely to be
found in damp
buildings or
areas of
buildings with
poor drainage or
water leaks.
3. They are unlikely
to be present in
buildings with
central heating
where the
moisture content
is low.

10. Wharf-borer
(Nacerdes
Melanura) FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. He wharf borer
(nacerdes
melanura ) is
common in the
pilings and
timbers of
wharves, piers,
and docks and is
most abundant
along the coastal
areas
2. It is found in any
wet, rotting
lumber
3. The females lay
their eggs on the
moist wood, and
the larvae tunnel
into the wood.
4. They feed and
grow and
produce long,
winding tunnels
inside the rotted
wood.

11. Ptilinus
Pectinicornis FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Colonies of
which are
usually found in
dry
exposed fagus w
ood

12. Carpenter
Ants
(Camponotus
spp) FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. They build nests
inside wood con
sisting of
galleries chewed
out with their
mandibles,
preferably in
dead, damp
wood.
2. However,
unlike termites,
they do not
consume wood.
3. They cut
"galleries" into
the wood grain
to provide
passageways to
allow for
movement
between
different
sections of the
nest.

13. Shipworn
(Teredo
Spp) FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Teredo worms in
the marine
environment.
2. Shipworms, also
called by
mariners as the
'termites of the
sea' belong to
the genus
called teredo,
3. Teredo
navalism is
found in
temperate and
tropical seas and
oceans
worldwide
4. Body which is
completely
enclosed in a
tunnel it has
made in floating
or submerged
timber.
5. Food particles,
mostly timber
rasping.
6. Teredo
navalism is a
very destructive
pest of
submerged
timber.

14. Gribble
(Limnoria
Spp) FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. The availability
of timber
structures or
drown wood.
2. They mainly
bore into the
upper thin layer
of wood and are
often found
boring into wood
in the intertidal
zone.
3. Essentially
wood-
consuming
crustacean
4. The crustacean
starts to feed on
wood after the
wood has been
submerged for
some time, and
so the wood has
already been
affected by other
wood-degrading
organisms.

15. Lyctus
powder
Post
Beetles FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Powder post
beetle larvae
spend months or
years
inside wood
while
developing,
feeding mainly
on the starch
content.
2. Powder post
beetles feed
on deciduous
trees, including
certain
hardwoods or
softwoods.
3. Some
hardwoods are
naturally
immune if they
have low starch
content or if
their pore
diameters are
too small for the
female beetle’s
ovipositor to lay
her eggs in.
4. They may also
leave piles of
powdery frass be
low.

16. Bostrychid
Powder
Post
Beetles FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Powder post
beetle larvae
spend months or
years
inside wood
while
developing,
feeding mainly
on the starch
content.
2. Powder post
beetles feed
on deciduous
trees, including
certain
hardwoods or
softwoods.
3. Some
hardwoods are
naturally
immune if they
have low starch
content or if
their pore
diameters are
too small for the
female beetle’s
ovipositor to lay
her eggs in.
4. They may also
leave piles of
powdery frass be
low.

17. Ernobius
Mollis FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Also known as
the pine bark
anobiid, pine
knot borer, bark
borer, or waney
edge borer
2. The female only
lays eggs in the
bark of fallen or
dead conifers
3. The newly
hatched larvae
gnaw their way
into the growth
layer and feed
partly on the
innermost layer
of bark, partly
on the
outermost zone
of sapwood.
4. If the bark is
removed the
larval tunnels
can be seen as
furrows (c. 1 mm
deep) in the
wood.

18. Deathwatch
Beetles
(
Xestobium
Rufovillosum
) FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Sometimes
infests the
structural
timbers of old
buildings.
2. Eggs are laid in
dark crevices in
old wood inside
buildings, trees,
and inside
tunnels left
behind by
previous larvae
3. The larvae bore
into the timber,
feeding for up to
ten years before
pupating, and
later emerging
from the wood
as adult beetles.
4. Timber that has
been damp and
is affected by
fungal decay is
soft enough for
the larvae to
chew through.

19. Common
Furniture
Beetle
(Anobium
Punctatum) FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. The female lays
her eggs in
cracks in wood
or inside old exit
holes, if
available.
2. In the larval
stage it bores
in wood and
feeds upon it.
3. The eggs hatch
after some three
weeks
4. For three to four
years the larvae
bore semi-
randomly
through timber,
following and
eating the
starchy part of
the wood grain,
and grow up to 7
millimetres
(0.28 in).
5. They come
nearer to the
wood surface
when ready to
pupate

20. Wood
Boring
Weevils FIGURE OF INSECT FIGURE OF DAMAGE BY INTSECT REMARK
1. Attack damp
and decaying
softwoods and
hardwoods
2. Often when this
infested with the
fungus, although
they will also
continue to
attack dried out
timber
previously
attacked by rot.
3. They can also
attack plywood
in these
conditions.
4. Outdoors this
isn't much of a
problem, but
inside your
property they
might infest
floorboards,
furniture, woode
n beams and any
other wooden o
bjects.

21. Source
1. www.google.com
2. https://en.wikipedia.org
3. Biological Deterioration |
4. Do You Recognize the 7 Early Warning Signs of a Termite Infestation?
5. The Difference Between Subterranean Termites And Drywood Termites
6. Florida Dampwood Termites
7. Horntails | Space for life
8. Deathwatch Beetles - Inspection Gallery - InterNACHI®
9. Ernobius Images @ Insect Images
10.Microsoft PowerPoint - Fact Sheet Wood-Boring Weevil 2015
11.Ernobius mollis
12.Limnoria lignorum (gribble)
13.Wood Boring Insects and Beetles | Western Exterminator
14.Wharf Borer | Horticulture and Home Pest News