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Requests to determine the cause of damage

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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Goat moth
Goat moth
Number: 6857
Received 28.8.2025
In progress: 2 days
Date of occurrence: 27.8.2025
Significance: Harmful
Discussion
From: Sybille
Assigned: M. Zúbrik
Country: Germany

Question

Answer

Dear Sybille, thanks for your picture of Cossus cossus. With best regards M. Zubrik
Number of votes for this answer: 0

Pest

Goat moth

Cossus cossus

Goat moth

Cossus cossus

hmyz

Received: 28.8.2025
Wood: Oak
Number: 6857
Date of occurrence: 27.8.2025
Discussion

Add comment: Goat moth

Goat moth
Goat moth
Number: 6560
Received 22.7.2025
In progress: 0 days
Date of occurrence: 22.7.2025
Significance: Harmful
Discussion
From: milan
Assigned: M. Zúbrik
Country: Slovakia

Question

Answer

Number of votes for this answer: 0

Pest

Goat moth

Cossus cossus

Goat moth

Cossus cossus

hmyz

Received: 22.7.2025
Wood: Oak
Number: 6560
Date of occurrence: 22.7.2025
Discussion

Add comment: Goat moth

Goat moth
Goat moth
Number: 5068
Received 10.9.2024
In progress: 0 days
Date of occurrence: 8.9.2024
Significance: Harmful
Discussion
From: Arne
Assigned: M. Zúbrik
Country: The Netherlands

Question

The tree has been damages for a year now, big and deep holes at the base of the trunk, about half a meter high. this was the first time I saw the larva eating in the sun. I made a small video here: https://www.youtube.com/watch?v=-6_TRFmnq64 I never saw a caterpillar this big and it looks like it is not native in our country.

Answer

Dear Arne, thank you for your inquiry, the photo, and the interesting information. This is a fairly common species of moth – the goat moth Cossus cossus. Its large larvae feed on the wood of many trees, where they can be quite harmful. In the autumn, they leave their feeding site and look for a place to pupate, which is why they are more frequently encountered during this part of the season. Have a nice day, M. Zúbrik
Number of votes for this answer: 0

Pest

Goat moth

Cossus cossus

Goat moth

Cossus cossus

hmyz

Received: 10.9.2024
Wood: -
Number: 5068
Date of occurrence: 8.9.2024
Discussion

Add comment: Goat moth

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