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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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A - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sureA - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sure
Number: 4523
Received 15.5.2024
In progress: 1 days
Date of occurrence: 15.5.2024
Significance:
Discussion
From: froukje
Assigned: J. Vakula
Country: The Netherlands

Question

mating room visible. single mothergallery often hooked shape up to 10cm, 1mm wide. larvagalleries far apart, about 3,5 cm long, 1mm wide. maybe have been a different tree: like abies.

Answer

Hello Froukje,thank you for very nice photos and detailed description with dimensions of galleries. I think that it is gallery of genus Pityophthorus. If it is spruce may be P. exsculptus. However, an exact determination is not possible. Many galleries look alike, and if they are older, it is very problematic to determine the species or even the genus. If possible, please try to determine the exact species of host tree in the future and send several photos of the entire gallery. Fresh galleries are more suitable for determination.Best regardsJozef
Number of votes for this answer: 0

Pest

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

Received: 15.5.2024
Wood: Spruce
Number: 4523
Date of occurrence: 15.5.2024
Discussion

Add comment: A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sure
Number: 4522
Received 15.5.2024
In progress: 1 days
Date of occurrence: 15.5.2024
Significance:
Discussion
Assigned: M. Zúbrik
Country: The Netherlands

Question

Callidium aeneum?

Answer

Dear Froukje, thanks for your inquiry. I want to encourage you to map species using this internet tool and send us your nice pictures. Although it seems that we are not able to identify most of your questions down to the species level. We are not taxonomists. We are a group of people who deal with forest and tree protection. Our goal is to help the owner recognize the cause of the damage, wilting or death of the tree. So I want to help him to take such precautions that will save the given tree, or prevent it from attacking next trees in the vicinity. From the point of view of forest or tree protection, it is not always necessary to recognize exactly what kind of beetle it is. Knowing that it is a bark beetle and not a fungal pathogen is often enough for the tree owner to take apropriate control measures. Just as the determination of species based on external morphological signs is complicated, the identification of galleries or feeding traces is even more difficult. Only a small part of galleries, wounds, damage, etc. it has such signs, on the basis of which the cause of the damage can be clearly determined totally exactly. Not all they are fully species-typical. I have some suggestions for you if you want your requests to be more exactly determined. Please try to send more pictures of dying trees, not totally dead trees. Try to capture more different symptoms, however remember, that to have a picture of the adults (in the case of insects) is always the best for species identification. I think that galleriess on the pictures were caused by some Cerambycidae species. They look very much like some Callidium galleries, but I can not say which exact species it is. With best regards, M. Zúbrik
Number of votes for this answer: 0

Pest

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

Received: 15.5.2024
Wood: Spruce
Number: 4522
Date of occurrence: 15.5.2024
Discussion

Add comment: A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sureA - Ambiguously determined, we are not sureA - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sure
Number: 4518
Received 15.5.2024
In progress: 0 days
Date of occurrence: 15.5.2024
Significance:
Discussion
Assigned: J. Galko
Country: The Netherlands

Question

Cryptomeria japonica,broke in half due to another tree falling on it. it is the only one in a group of 9 with it. Infestation only above breakpoint, also in branches >3cm. gallery appr 20 cm long, up to 1cm, entrance hole only 4 mm. lamprodila festiva?

Answer

Hello. Gallery looks simalar to Lamprodila festiva gallery system but we are not sure. Simalar gallery can create another Buprestids or Cerambycids species. Some Cerambycids on Cryptomeria japonica are decribed here (https://avesis.gazi.edu.tr/yayin/b4979d05-8d63-4f42-8ae9-6c2d6236bb3c/cupressaceae-and-taxaceae-taxa-pinopsida-cupressales-associated-with-longicorn-beetle-taxa-coleoptera-cerambycidae-of-turkey/document.pdf). All the best, JG.
Number of votes for this answer: 0

Pest

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

Received: 15.5.2024
Wood: Cypress
Number: 4518
Date of occurrence: 15.5.2024
Discussion

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A - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sureA - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sure
Number: 4213
Received 12.3.2024
In progress: 0 days
Date of occurrence: 30.1.2024
Significance:
Discussion
From: ana maria
Assigned: M. Zúbrik
Country: Romania

Question

country is Romania, but is not in the list

Answer

Dear Ana, thank you for your inquiry. Identifying this hairy object is no easy task, but it appears to resemble a gall. There are several insect species that induce galls on oak trees. Generally, they belong to two groups: hymenoptera and diptera. This particular specimen resembles a gall induced by the Hymanoptera species  a gall wasp, Neuroterus lanuginosus. However, it cannot be ruled out that other factors may be responsible, as the symptoms are not unequivocal. Wishing you a pleasant day, Milan Zubrik  https://www.forestpests.eu/pest/neuroterus-lanuginosus
Number of votes for this answer: 0

Pest

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

Received: 12.3.2024
Wood: Oak
Number: 4213
Date of occurrence: 30.1.2024
Discussion

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A - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sure
Number: 3889
Received 23.10.2023
In progress: 0 days
Date of occurrence: 23.10.2023
Significance:
Discussion
From: Christo
Assigned: M. Zúbrik
Country: Slovakia

Question

Answer

Such outgrowths are occasionally visible on beech trunks. We have not identified any association with some diseases. Best regards M. Zubrik
Number of votes for this answer: 0

Pest

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

Received: 23.10.2023
Wood: Beech
Number: 3889
Date of occurrence: 23.10.2023
Discussion

Add comment: A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sureA - Ambiguously determined, we are not sureA - Ambiguously determined, we are not sure
A - Ambiguously determined, we are not sure
Number: 3118
Received 15.3.2023
In progress: 1 days
Date of occurrence: 25.2.2023
Significance:
Discussion
From: alderash
Assigned: M. Zúbrik
Country: Serbia

Question

Pinus nigra most likely.

Answer

Thank you very much for your inquiry. Upon observation of the tree, there are signs of the presence of some species of Cerambycidae - longhorn beetles. However, from the picture provided, it is not possible to determine the exact species of the beetles. It is important to note that these beetles typically only play a minor role in tree decline, as many of them are strongly secondary pests that attack and inhabit weakened or damaged trees. Therefore, in this case, it is not possible to determine the exact reason for the mortality of the tree from the picture alone. Thank you very much and have a nice day! MZ  
Number of votes for this answer: 0

Pest

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

A - Ambiguously determined, we are not sure

Received: 15.3.2023
Wood: Pine
Number: 3118
Date of occurrence: 25.2.2023
Discussion

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