WESTERN CONIFER SEED BUG
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WESTERN CONIFER SEED BUG EXPERTS
Of North American origin, the western conifer seed bug, also known as the “pine bug”, has 88 species in Canada and the United States. A recent arrival in Quebec, it feeds on spruce cones, attacking the seeds. All species are vegetarian.
Its body is between 15 and 20 mm long and has a beautiful reddish-brown color. The bug has long back legs and hard wings. It is a phytophagous insect that feeds on plant substances.


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WESTERN CONIFER SEED BUG
FREQUENTLY ASKED QUESTIONS
ALL YOU NEED TO KNOW ABOUT THE
WESTERN CONIFER SEED BUG
Does the Western Conifer Seed Bug bite?
No, the western cone bug doesn’t bite and poses no danger to humans. Unlike some other bug species, it is phytophagous, which means it feeds only on plants, and does not have a rostrum capable of piercing human skin.
How to get rid of the Western Conifer Seed Bug?
If you find these bedbugs in your home, here are some effective methods for eliminating them:
✅ Use a vacuum cleaner: Vacuum up the bedbugs and immediately empty the bag or reservoir outside.
✅ Don’t crush them: They may give off a slight unpleasant odour.
✅ Seal entrances: Seal cracks and gaps around doors and windows to prevent entry.
✅ Install screens in good condition: Make sure there are no holes for bedbugs to get through.
✅ Use a light trap: Bedbugs are attracted to light and can be captured with special traps.
How to keep Pine Seed Bugs away?
To prevent their intrusion, here are a few tips:
🔸 Apply silicone or caulking around windows and door frames.
🔸 Eliminate sources of attraction such as coniferous trees close to houses.
🔸 Limit outdoor lighting, especially in autumn, as they are attracted by light.
🔸 Place sticky traps in strategic locations.
🔸 Use repellent essential oils, such as peppermint oil or neem oil, at entry points.
Spider control: Some species of wasps are known to chase spiders, helping to maintain a balance.
In which months are Western Conifer Seed Bugs most active?
Western cone bugs are most active from late spring to autumn.
- Spring (April – May): Adults emerge from hibernation and begin feeding on conifers.
- Summer (June – August): Oviposition and larval development.
- Autumn (September – October): Seeking warm shelter for winter, often in houses.
- Winter (November – March): They go into hibernation, hiding in cracks and woodwork.
So it’s mainly in autumn that they invade homes, looking for a warm place to spend the winter.
Why hire an exterminator for Western Conifer Seed Bugs?
While the presence of a few pine seed bug can be tolerated, a large infestation can quickly become a problem. Here’s why it may be worthwhile to contact a Pest control:
✔ Avoiding a mass invasion: One female can lay several eggs, leading to a rapid increase in the population.
✔ Effective treatment: A professional uses suitable, safe methods to eliminate bedbugs without risk to your health or your home.
✔ Long-term prevention: An exterminator can identify entry points and apply preventive measures to keep them from returning.
✔ Fast, safe intervention: Unlike home solutions, an exterminator can act effectively and thoroughly.
If you notice a significant presence of bedbugs in or around your home, it’s advisable to call in a professional before the situation gets out of hand.


| Name | WESTERN CONE BUG |
|---|---|
| Class | Insects |
| French name | Punaise occidentale des cônes |
| Latin name | Leptoglossus occidentalis |
| Length | 15 and 20 mm |
| Color | Red brown |
| Life | 1 year |
Their habitat and environment
Chinch bugs live mainly on pines and conifers, feeding on spruce seeds and cones. They hate the cold and seek warm places to hibernate in winter. They are often found inside houses, in window frames or woodwork gaps.
Reproduction of the cone bug
The female lays several rows of eggs on conifer needles. The eggs incubate between two and three weeks. The young larvae feed on the soft parts of the cones, enabling them to develop rapidly. During the hottest part of the summer, the bugs develop wings, marking their transition to the adult stage.
Special features
The bug has infrared receptors that enable it to detect food at a distance. It perceives the heat emitted by the cones, which is a novelty for a phytophagous insect (which eats (-phage) plants (phyto-) such as roots, leaves, flowers etc.).
Bad reputation
Bedbugs often have a bad image that persists in popular belief: they are associated with “bloodsuckers”, as some species feed on human blood via a painful bite from their rostrum. It’s also said that if you crush a bedbug, it gives off a pestilential odour – something that has yet to be verified!
What is certain is that this insect is invasive and has conquered Europe, even though it is clearly native to North America.

