Wood-destroying
Organisms
Click on the links below or scroll down for pictures and descriptions of typical wood-destroying organisms in Northern California.
Click on links below or scroll down for information on:
Subterranean
Termites
This
species is restricted to the West, ranging from British Columbia to
Mexico.
These insects are swarmers. They are about 3/8" long including
wings. Bodies are dark brown to almost black.
Fontanelle (frontal
gland pore) is present and they have front wings with two dark,
hardened veins in the front portion.
The wings are brownish gray
with a few barely visible hairs. Their front wing scale is distinctly
larger than the hind wing scale.
Legs have a slightly darkened tibia
and a pale tarsus.
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Drywood
Termites
These
insects live in wood which has a relatively low moisture content (12%
or less), in the Western United States, Northwestern Mexico, and Florida.
They are swarmers 7/16" to 1/2 " long including wings. Their
heads and pronotums are orange brown, abdomens are dark brown, and
wing membranes and hardened veins are blackened. They have Antenna
with 10-11 segments. They are not hairy, their tibia exhibit no spines
along their length and they have no pad between their claws.
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Dampwood
Termites
As
their name implies, dampwood termites locate their colonies in damp,
sometimes decaying wood.
Representatives of three termite families
(Kalotermitidae, Rhinotermitidae, Termopsidae) are included in this
distinct habitat group.
These termites vary in appearance from family
to family.
Almost all are larger than the eastern/western, desert
subterranean termites with the nymphs being up to 3/4" (20
mm) long and the swarmers up to 1" (25 mm) long, including
wings.
They occur in the Pacific Coastal and adjacent states, the
desert or semi-arid Southwest, and Southern Florida. 
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Anobiid Beetles
Anobiids
Beetles are the most commonly encountered of the powderpost beetles.
They are also called Deathwatch beetles because of a tapping sound
they make when mating. Heard in the quiet of the night by people sitting
with an ill person, this tapping was believed to indicate that death
was near.
Adults are from 1/32 to 3/8" long. Their shape is variable
but usually elongated and cylindrical. Their color is reddish brown
to black, sometimes with lighter areas of pale hairs. Prothorax
hoodlike enclosing head. Antennae are not symmetrical, last three
segments lengthened and expanded. Larvae are white and C-shaped.
Signs of infestation are round holes in wood with piles of powdery
waste below.
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Wood
Decay Fungus
Wood
Decay fungus (poria incrassata)
For a great discussion of this problem, we recommend the following
web site.
More
information on poria incrassata
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Carpenter
Ants
Several
species of carpenter ants, Camponotus spp., are capable of damaging
wood in buildings and other structures. Carpenter ants cause problems
mainly in mountainous areas and in forested rural areas along the
central and northern coastlines of California; they may also invade
buildings in urban locations.
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