CA BRANCH 3 STRUCTURAL PEST CONTROL EXAM QUESTIONS WITH ALL CORRECT ANSWERS
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CA BRANCH 3 STRUCTURAL PEST CONTROL
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CA BRANCH 3 STRUCTURAL PEST CONTROL
CA BRANCH 3 STRUCTURAL PEST CONTROL EXAM QUESTIONS WITH ALL CORRECT ANSWERS
What is another name for the bark beetle and why? - ANSWER- The Engraver Beetle. Because as the eggs hatch, the larvae make their own picturesque tunnels that radiate out from the egg gallery creating an interesting 'engr...
CA BRANCH 3 STRUCTURAL PEST
CONTROL EXAM QUESTIONS WITH
ALL CORRECT ANSWERS
What is another name for the bark beetle and why? - ANSWER- The Engraver Beetle.
Because as the eggs hatch, the larvae make their own picturesque tunnels that radiate
out from the egg gallery creating an interesting 'engraving'.
What ant is the largest structural pest ant in the US? - ANSWER- The Carpenter Ant
What color are Carpenter Ants? - ANSWER- Most are black, but some in Southern
California have orange thoraxes.
Do Carpenter Ants eat wood? - ANSWER- No.
Carpenter Ant colonies are polymorphic. What does Polymorphic mean? - ANSWER-
Those in the same colony are of different sizes.
What is the life cycle of a Carpenter Ant? - ANSWER- They swarm in early spring and
late summer. They mate in the air, and the male dies. The mated female's wings break
off and she burrows into wood for nesting.
Where are some areas a carpenter ant might nest? - ANSWER- Outside in stumps,
logs, under stones.
Extending into the home they may nest in wall voids, hollow flush panels doors, termite
galleries in wood, stored furniture, foamed plastic, and fiberglass insulation.
Are carpenter ants exclusively found in only moist wood? - ANSWER- No. They will
extend into sound wood.
What are some distinguishing factors of the Carpenter Ant frass? - ANSWER- It is
similar to sawdust with dead bugs mixed in. They make slit-like openings in the wood to
expel the frass. Galleries are very clean because they expel most of the frass from the
galleries.
Do the Carpenter Ant Larva do damage to wood?!? - ANSWER- No.
How many nodes does a Carpenter Ant have? - ANSWER- 1 node
What are the distinguishing features of a carpenter bee? - ANSWER- They are black in
color, they do not have a stinger.
What kind of wood does a carpenter bee prefer? - ANSWER- Softwoods. Especially
attracted to California redwood, cypress, cedar, white pine, and southern yellow pine.
They will avoid well-painted wood.
,When the entry holes have been used extensively, there are small yellow-brown fecal
streaks around them (more easily noticeable on light colored wood).
What does the frass of a carpenter bee look like? - ANSWER- The frass looks similar to
sawdust. There are no dead ants or other dead insects mixed in with the sawdust.
What do you do to control Carpenter Bees? - ANSWER- Inject a State Registered dust,
liquid or whitmore type aerosol (carbamate preferred) into exit holes. Several days later
the hole should be plugged. Plugging without doing insecticide may result in other holes
being made by emerging adult or emerging next generation.
In what way does the appearance of a wood wasp differ from that of a regular wasp? -
ANSWER- The wood wasp does not have a pinched in waist and they do not have a
stinger.
Do wood wasps reinfest wood in buildings? - ANSWER- No. The larvae live in the wood
of trees and will sometimes emerge from the wood in buildings 3-5 years later.
How does the female lay her eggs? - ANSWER- She repeatedly inserts her ovipositor
into the bark. As she lays her eggs she also inserts fungus spores which germinate
rapidly and produce growing fungi which serves as food for the larvae.
What does the frass of a wood wasp look like? - ANSWER- The frass in the tunnels is
tightly packed.
What does the larvae of a wood wasp look like? - ANSWER- The larvae is slightly S-
shaped. The head is slightly down and the tail is slightly up with a horny spine.
How do control wood wasps? - ANSWER- No control is usually necessary. You can kiln
dry infested lumber which which is a preventative measure, but can be costly.
Sometimes when continued emergence becomes a problem, fumigation can be used,
but is not always effective because the wood wasp larva bores deeper into the wood
than other borers and their frass is so tightly packed in their tunnel.
Is wood decay considered a 'pest'? - ANSWER- Yes. It is a living plant, a fungus that
attacks and destroys wood.
The chemical used to control wood decay is a pesticide (fungicide).
What is the best control of wood decay? - ANSWER- The best corrective measure is to
reduce the water content of the wood, which means doing structural repair work.
A fungicide used to kill the wood decay is a wood preservative, and works best when
applied to cut ends where it can soak deeper into the grain.
, How does the wood become decayed? - ANSWER- If the moisture content of the wood
nears 28%-30% for any appreciable amount of time, decay fungi spores which are
present in the air will attack it.
20% moisture content is generally considered safe standard and will generally not allow
for fungi spores to attack.
How does the wood decay (fungi) grow? - ANSWER- The germinating spores send out
tiny, usually microscopic growing strands called hyphae. Masses of hyphae are called
mycelia. The mycelia use an enzyme to penetrate the wood and then go from cell to cell
of the wood destroying the cellulose and sometimes the lignin as well.
One the decay is thriving, it produces fruiting bodies (mushroom shaped usually) that
produce thousands of spores and the cycle repeats.
Masses of hyphae are called what? - ANSWER- Mycelia
Where is brown rot most frequently encountered? - ANSWER- In structures in
California.
What is another name for Brown Rot? - ANSWER- Dry Rot
What does brown rot look like? - ANSWER- When dry, it appears especially dry. It
causes the wood to become crumbly, even powdery. It cracks at intervals across the
grain, and sometimes with the grain to form small chunks.
What causes dry rot? - ANSWER- Excessive Moisture
What are rhizomorphs? - ANSWER- In the water-conducting fungus "Poria", it's mycelia
are intertwined into root-like strands called rhizomorphs.
The rhizomorphs will branch and carry moisture from damp wood to relatively dry wood
and allow the Poria to attack dryer wood than can be attacked by other fungi.
Does the brown rot die when you remove the moisture? - ANSWER- No. Brown rot can
survive for years in a wood that has become too dry. However, once moisture is
returned to the wood, it will continue growth.
This is why we must perform a rout and fill when correcting dry rot problems. We must
rout out the rot to keep it from continuing to grow later.
Brown rot attacks primarily... - ANSWER- Softwoods
White rot attacks primarily.... - ANSWER- Hardwoods
Which rot grows more slowly, brown rot or white rot? - ANSWER- White rot
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