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Here you can request to determine the cause of the damage. You can view the requests of other users and sort them according to the selected criteria. In addition, you can get information about your request, and you can follow the progress of its current state. If your application was not approved, it had probably been because it was impossible to identify the damage based on the sent photos or because the application does not address our topic - determining the pests of trees and shrubs. We will inform you about the status of your application by email.

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Western conifer seed bug
Obrubnica americkáObrubnica americká
Western conifer seed bug
Number: 7049
Received 3.10.2025
In progress: 0 days
Date of occurrence: 3.10.2025
Significance: Less harmful
Discussion
From: Fysh
Assigned: M. Zúbrik
Country: United Kingdom

Question

Answer

Dear Fysh, this is Leptoglossus occidentalis - Western conifer seed bug. Considered as the main seed predator in seed orchards of Western North America. This large-sized bug (1.6-2 cm long) has been accidentally introduced into northern Italy during the late 1990s (first record 1999). It then invaded the whole Central and Western Europe. Overwintering occurs as an adult in bark crevices or into buildings where it can enter in large numbers in autumn. With best regards Milan Zubrik
Number of votes for this answer: 0

Pest

Western conifer seed bug

Leptoglossus occidentalis

Western conifer seed bug

Leptoglossus occidentalis

hmyz

Received: 3.10.2025
Wood: Fir
Number: 7049
Date of occurrence: 3.10.2025
Discussion

Add comment: Western conifer seed bug

Western conifer seed bug
Western conifer seed bug
Number: 5061
Received 7.9.2024
In progress: 0 days
Date of occurrence: 7.9.2024
Significance: Less harmful
Discussion
Assigned: M. Zúbrik
Country: United Kingdom

Question

Answer

Dear Elize, thank you for a picture of Leptoglossus occidentalis. With best regards M. Zubrik
Number of votes for this answer: 0

Pest

Western conifer seed bug

Leptoglossus occidentalis

Western conifer seed bug

Leptoglossus occidentalis

hmyz

Received: 7.9.2024
Wood: Blackthorn
Number: 5061
Date of occurrence: 7.9.2024
Discussion

Add comment: Western conifer seed bug

Western conifer seed bug
Western conifer seed bug
Number: 5046
Received 3.9.2024
In progress: 1 days
Date of occurrence: 9.3.2024
Significance: Less harmful
Discussion
From: Albe
Assigned: M. Zúbrik
Country: The Netherlands

Question

Answer

Dear Albe, thanks for your inquiry. This is adults of Leptoglossus occidentalis, western conifer seed bug. Best regards M. Zúbrik
Number of votes for this answer: 0

Pest

Western conifer seed bug

Leptoglossus occidentalis

Western conifer seed bug

Leptoglossus occidentalis

hmyz

Received: 3.9.2024
Wood: -
Number: 5046
Date of occurrence: 9.3.2024
Discussion

Add comment: Western conifer seed bug

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