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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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Code
Date
Assigned
Status
Days from submission
4519
15.5.2024
A. Kunca
In progress
4

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A - This species is not in the database yet
A - This species is not in the database yetA - This species is not in the database yetA - This species is not in the database yet
A - This species is not in the database yet
Number: 4531
Received 16.5.2024
In progress: 0 days
Date of occurrence: 16.5.2024
Significance:
Discussion
From: froukje
Assigned: M. Zúbrik
Country: The Netherlands

Question

on Mespilus germanica on thin part trunk/first branches. Lg on pictures excavated by woodpeckers. LG zigzagging deeply sunken in the wood, severe damage, but tree still alive. d-shape exit holes 3,5mm wide. not all exit holes are neatly d-shaped.

Answer

Dear Froukje, thanks for this question and a nice pictures. Yes, the gallery seems to me very much like gallery system of Agrilus sinuatus. This species is very probably the author of this gallery. With best regards M. Zubrik
Number of votes for this answer: 0

Pest

A - This species is not in the database yet

A - This species is not in the database yet

A - This species is not in the database yet

A - This species is not in the database yet

Received: 16.5.2024
Wood: Different tree species
Number: 4531
Date of occurrence: 16.5.2024
Discussion

Add comment: A - This species is not in the database yet

A - This species is not in the database yet
A - This species is not in the database yetA - This species is not in the database yetA - This species is not in the database yet
A - This species is not in the database yet
Number: 4525
Received 15.5.2024
In progress: 0 days
Date of occurrence: 15.5.2024
Significance:
Discussion
From: froukje
Assigned: M. Zúbrik
Country: The Netherlands

Question

large feeding galleries, d-shape exit holes. Could only be agrilus ater? by description agrilus suvurovi could fit. but cannot find a trace or even acknowledgement of existence in the netherlands. is it a new species?

Answer

Thank you for your request and a nice pictures. Yes, it is absolutely sure, these galleries and exit holes belongs to some species from the genus Agrilus. I think it could be A. ater, that is already known from Netherlands. See: https://www.tuite.nl/iwg/Coleoptera/Agrilus_ater2017.pdf. Best regards M. Zubrik
Number of votes for this answer: 0

Pest

A - This species is not in the database yet

A - This species is not in the database yet

A - This species is not in the database yet

A - This species is not in the database yet

Received: 15.5.2024
Wood: Poplar
Number: 4525
Date of occurrence: 15.5.2024
Discussion

Add comment: A - This species is not in the database yet

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

Oak lace bug
Oak lace bug
Oak lace bug
Number: 4521
Received 15.5.2024
In progress: 0 days
Date of occurrence: 14.5.2024
Significance: Harmful
Discussion
From: majo
Assigned: M. Zúbrik
Country: Slovakia

Question

Thank you, Marián

Answer

Thanks for request. Thre are eggs of Corythucha arcuata, commonly known as the oak lace bug, on oak leaves. Is a species of true bug belonging to the family Tingidae. It is known for its distinctive lace-like appearance on the leaves of oak trees, caused by its feeding activity. This insect can cause damage to oak trees by sucking sap from the leaves, leading to yellowing, wilting, and premature leaf drop. Best regards M. Zubrik
Number of votes for this answer: 0

Pest

Oak lace bug

Corythucha arcuata

Oak lace bug

Corythucha arcuata

hmyz

Received: 15.5.2024
Wood: Oak
Number: 4521
Date of occurrence: 14.5.2024
Discussion

Add comment: Oak lace bug

Horse-chestnut leaf miner
Horse-chestnut leaf miner
Number: 4520
Received 15.5.2024
In progress: 0 days
Date of occurrence: 13.5.2024
Significance: Harmful
Discussion
From: majo
Assigned: M. Zúbrik
Country: Slovakia

Question

Thank you and best regrads. Marián

Answer

Thanks for regquest. These ochre to brown mines on leaves are caused by larvae of small moth Cameraria ohridella, living insede the parenchyma. Best regards MZ
Number of votes for this answer: 0

Pest

Horse-chestnut leaf miner

Cameraria ohridella

Horse-chestnut leaf miner

Cameraria ohridella

hmyz

Received: 15.5.2024
Wood: Horse Chestnut
Number: 4520
Date of occurrence: 13.5.2024
Discussion

Add comment: Horse-chestnut leaf miner

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

hmyz

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

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

Frost
Frost
Number: 4504
Received 13.5.2024
In progress: 1 days
Date of occurrence: 13.5.2024
Significance: Very harmful
Discussion
Assigned: M. Zúbrik
Country: Slovakia

Question

Answer

Frost damages on young spruce tree. 
Number of votes for this answer: 0

Pest

Frost

Frost

Frost

Frost

ine

Received: 13.5.2024
Wood: Spruce
Number: 4504
Date of occurrence: 13.5.2024
Discussion

Add comment: Frost

Oak lace bug
Oak lace bug
Number: 4480
Received 11.5.2024
In progress: 2 days
Date of occurrence: 11.5.2024
Significance: Harmful
Discussion
Assigned: M. Zúbrik
Country: Slovakia

Question

Answer

monitoring: C. arcuata
Number of votes for this answer: 0

Pest

Oak lace bug

Corythucha arcuata

Oak lace bug

Corythucha arcuata

hmyz

Received: 11.5.2024
Wood: Oak
Number: 4480
Date of occurrence: 11.5.2024
Discussion

Add comment: Oak lace bug

Willow spittlebug
Willow spittlebug
Number: 4478
Received 10.5.2024
In progress: 3 days
Date of occurrence: 10.5.2024
Significance: Harmful
Discussion
Assigned: M. Zúbrik
Country: Slovakia

Question

Answer

monitoring: Aphrophora salicina
Number of votes for this answer: 0

Pest

Willow spittlebug

Aphrophora salicina

Willow spittlebug

Aphrophora salicina

hmyz

Received: 10.5.2024
Wood: Willow
Number: 4478
Date of occurrence: 10.5.2024
Discussion

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Mottled umber moth
Mottled umber moth
Number: 4477
Received 10.5.2024
In progress: 3 days
Date of occurrence: 10.5.2024
Significance: Very harmful
Discussion
Assigned: M. Zúbrik
Country: Slovakia

Question

Answer

monitoring: E. defoliara
Number of votes for this answer: 0

Pest

Mottled umber moth

Erannis defoliaria

Mottled umber moth

Erannis defoliaria

hmyz

Received: 10.5.2024
Wood: Hawthorn
Number: 4477
Date of occurrence: 10.5.2024
Discussion

Add comment: Mottled umber moth

Gall mite Aceria myriadeum
Gall mite Aceria myriadeum
Number: 4476
Received 10.5.2024
In progress: 3 days
Date of occurrence: 10.5.2024
Significance: Less harmful
Discussion
Assigned: M. Zúbrik
Country: Slovakia

Question

Answer

monitoring: Aceria myriadeum
Number of votes for this answer: 0

Pest

Gall mite Aceria myriadeum

Aceria myriadeum

Gall mite Aceria myriadeum

Aceria myriadeum

roztoce

Received: 10.5.2024
Wood: Maple
Number: 4476
Date of occurrence: 10.5.2024
Discussion

Add comment: Gall mite Aceria myriadeum

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