HOUSE LONGHORN BEETLE
EXTERMINATION OF HOUSE BEETLE
The house longhorn beetle is a beetle that produces wood-eating larvae, which are harmful to wood and cause a lot of damage to the structure of houses and also to forests. Capricorns feed mainly on the sapwood* of wood because it is the softest and most nutritious part of the trunk. These insects only attack softwoods such as maritime pine, Scots pine, larch, spruce, fir and black pine.
*Beech: the lightest and softest part of the trunk wood, located near the heart. When the tree is standing, this is where the raw sap from the roots flows.
House longhorned beetle technical and reproduction data sheet
The female lays an average of thirty eggs, sometimes up to 200 for large females. The hatching of the egg takes between 7 to 20 days to reveal a larva, which will then become a nymph and then an adult.
Their favorite pastime is to dig galleries in the wood, which can progress 10 mm per day. With their powerful mandibles, the larvae can pierce a thin sheet of lead or zinc, so watch out for your frames!
With a whitish color and a head larger than its body, it measures 2 to 3 cm in length. Once adult, the insects are not dangerous for wood frames, but the problem is that they reproduce rapidly and give birth to new destructive larvae.
The larva is sometimes subjected to extremely large temperature changes, but it has the ability to pause when the temperature is too low or too high, its ideal temperature being between 25°C and 30°C.
In the adult stage, it has a flat and brown body. The males measure from 8 to 15 mm, the females from 10 to 25 mm. Its lifespan is very short, about 25 days, so it does not feed, devoting itself exclusively to reproduction.
As it flies poorly, the generations that succeed each other remain on the same area, that is to say on the same structure or infesting the neighboring frames. It even happens that some capricorns reproduce without leaving their galleries from generation to generation.
HOW TO DETECT A SIGN OF THEIR PRESENCE
If your roof is in the attic, under insulation, chances are you won’t notice their presence. The larvae work discreetly, leaving nothing visible on the surface. Even an exposed beam (made of softwood) can harbor Capricorn beetle larvae for a long time without anyone noticing. And yet, they are capable of weakening a frame or collapsing a floor.
Beware, from the moment you discover the presence of Capricorns in your house, it is several years that this xylophagous insect is present.
HOW TO PREVENT HOUSE LONGHORN BEETLE?
- Vacuum and close bags tightly.
- Dehumidify attics, rooms, cellars and attics.
- If you have firewood, do not string it against the outside walls of your house, put it away from your house
Is it necessary to call a professional to apply a preventive wood treatment? In absolute terms and in some cases, you could do it, but a professional can offer you his expertise and a guarantee!
If your house is new, you should know that wood is systematically treated for a period of 10 years. Even if you install a softwood floor, you will be safe from wood-eating insects for a few years. The best way to avoid problems remains the preventive treatment of the frame but also of the parquet floors, the frames…