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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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Date
Assigned
Status
Days from submission
6853
27.8.2025
J. Vakula
Completed
5
6851
26.8.2025
A. Gubka
Completed
7
6825
22.8.2025
M. Zúbrik
Completed
3
6596
30.7.2025
M. Zúbrik
Completed
0
6590
28.7.2025
M. Zúbrik
Completed
0
6566
22.7.2025
M. Zúbrik
Completed
0
6565
22.7.2025
S. Rell
Completed
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6528
17.7.2025
M. Zúbrik
Completed
0
6518
17.7.2025
M. Zúbrik
Completed
11
6504
16.7.2025
michal.lalik@nlcsk.org
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Steelblue jewel beetle
Krasoň modrýKrasoň modrý
Steelblue jewel beetle
Number: 5294
Received 18.11.2024
In progress: 0 days
Date of occurrence: 17.11.2024
Significance: Very harmful
Discussion
From: Juraj
Assigned: M. Zúbrik
Country: Slovakia

Question

Krasoň modrý - Phaenops cyanea

Answer

Dobrý deň, ďakujeme za dotaz. Áno, je to krasoň modrý. S pozdravom M. Zúbrik
Number of votes for this answer: 0

Pest

Steelblue jewel beetle

Phaenops cyanea

Steelblue jewel beetle

Phaenops cyanea

hmyz

Received: 18.11.2024
Wood: Borovica
Number: 5294
Date of occurrence: 17.11.2024
Discussion

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Cypress jewel beetle
Krasoň borievkovýKrasoň borievkovýKrasoň borievkový
Cypress jewel beetle
Number: 5286
Received 12.11.2024
In progress: 1 days
Date of occurrence: 12.11.2024
Significance: Very harmful
Discussion
From: Jana M.
Assigned: S. Rell
Country: Slovakia

Question

Vysychanie vetvičiek, nepravidelné. Nájdené aj otvory. Ide o krasoňa? Dajú sa v tomto štádiu ešte tuje zachrániť nejakým postrekom? Ďakujem

Answer

Dobrý deň, áno, s najväčšou pravdepodobnosťou sa jedná o krasoňa borievkového Lamprodila festiva. Či sa strom dá ešte zachrániť je otázne. Určite je potrebné odstrániť napadnuté časti, minimále konáre. Následne, najlepšie v čase vegetácie použiť systémový insekticíd, možno aj viac krát. Prípravok aj dávkovanie by Vám mali vedieť odporučiť v záhradníctve. A pravidelne kontrolovať. Je tiež možné, že jedince ktoré sa kuklia a už neprijímajú potravu, dokončia svoj vývin aj po aplikácii insekticídu. Momentálne je tento druh aj vďaka miernejším zimám na vzostupe a možností pre jeho šírenie sa nájdu v podstate na každom kroku (záhrady, parky a iné výsadby tují, borievok, cypruštekov a pod.)   https://www.skodcoviadrevin.sk/skodca/krason-borievkovy Snáď Vám tieto informácie pomôžu.   S pozdravom SR
Number of votes for this answer: 0

Pest

Cypress jewel beetle

Lamprodila festiva

Cypress jewel beetle

Lamprodila festiva

hmyz

Received: 12.11.2024
Wood: Tuja
Number: 5286
Date of occurrence: 12.11.2024
Discussion

Add comment: Cypress jewel beetle

Linden jewel beetle
Krasoň lipovýKrasoň lipovýKrasoň lipový
Linden jewel beetle
Number: 5181
Received 15.10.2024
In progress: 6 days
Date of occurrence: 15.10.2024
Significance: Less harmful
Discussion
From: Erik
Assigned: S. Rell
Country: Slovenia

Question

Answer

Hello, These are the exit holes of the Linden jewel beetle Lamprodila rutilans. It develops under the bark of trunks and bare roots on the sunny side of the tree. If the tree trunk is shaded, this species should not attack it.   more info: https://www.forestpests.eu/pest/lamprodila-rutilans   Best regards SR
Number of votes for this answer: 0

Pest

Linden jewel beetle

Lamprodila rutilans

Linden jewel beetle

Lamprodila rutilans

hmyz

Received: 15.10.2024
Wood: Lime
Number: 5181
Date of occurrence: 15.10.2024
Discussion

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Cypress jewel beetle
Krasoň borievkovýKrasoň borievkovýKrasoň borievkový
Cypress jewel beetle
Number: 5152
Received 7.10.2024
In progress: 2 days
Date of occurrence: 7.10.2024
Significance: Very harmful
Discussion
From: Adam
Assigned: J. Galko
Country: Slovakia

Question

Dobrý deň, podľa popisu aj videa LOS BS poškodenie tují pôsobí ako dôsledok napadnutia krasoňom, no nepodarilo sa mi nájsť výletové otvory (aj keď len na pomerne malej prístupnej sekcii kmeňa). Tuje vysychajú najprv od vetvičiek po skoro celý strom (viď. foto č.1). Prosím o pomoc pri identifikácii. Vďaka.

Answer

Dobrý deň. Suché/vysychajúce tuje je stále väčší problém, najmä na juhu Slovenska.Možno larvy ešte stále žerú pod kôrou, preto nevidíte výletové otvory. Ale nemusí to byť len krasoň borievkový, ale často je spolu aj s inými podkôrnymi druhmi, ako lykokaz tujový a l.borievkový. Tu sú o týchto druhoch naše ďalšie videá https://youtu.be/2U1oNXKHsDQ https://youtu.be/-BwCOys0xE0 Opatrne sa pozrite pood kôrou suchých/vysychajúcich vetiev, či tam nenájdete požerky (larvy, codbičky, jemná drvina). Pozrite si aj tie najmenšie suché vetvičky, či nemajú v sebe dierku. Ak áno, je to zrelostný žer uvedených lykokazov. Ak tam nič nenájdete, tak pripadajú do úvahy ešte nejaké hubové patogény alebo jednoducho sucho. Suché vetvy (ak sú v nich larvy) orežte a ideálne spálte alebo inak zneškodnite. Pravidelne to postriekajte nejakých insekticídom. Poradia vám v záhradkárstve.   S pozdravom JG
Number of votes for this answer: 0

Pest

Cypress jewel beetle

Lamprodila festiva

Cypress jewel beetle

Lamprodila festiva

hmyz

Received: 7.10.2024
Wood: Tuja
Number: 5152
Date of occurrence: 7.10.2024
Discussion

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Fungus Inonotus hispidus
Ryšavec srstnatýRyšavec srstnatýRyšavec srstnatý
Fungus Inonotus hispidus
Number: 5098
Received 18.9.2024
In progress: 0 days
Date of occurrence: 18.9.2024
Significance: Less harmful
Discussion
Assigned: A. Kunca
Country: United Kingdom

Question

Individual fruiting bodies on upper half of the tree stem.

Answer

Dear will, I would say it is Inonotus hispidus. But could be also some other Inonotus, as this one is pretty red.   cheers andrej.
Number of votes for this answer: 0

Pest

Fungus Inonotus hispidus

Inonotus hispidus

Fungus Inonotus hispidus

Inonotus hispidus

huby

Received: 18.9.2024
Wood: Walnut
Number: 5098
Date of occurrence: 18.9.2024
Discussion

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Cypress jewel beetle
Cypress jewel beetle
Number: 5096
Received 18.9.2024
In progress: 0 days
Date of occurrence: 18.9.2024
Significance: Very harmful
Discussion
From: Slavo
Assigned: Appka
Country: Slovakia

Question

Answer

Number of votes for this answer: 0

Pest

Cypress jewel beetle

Lamprodila festiva

Cypress jewel beetle

Lamprodila festiva

hmyz

Received: 18.9.2024
Wood: Cypruštek
Number: 5096
Date of occurrence: 18.9.2024
Discussion

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Agrilus ater
Krasoň topoľovýKrasoň topoľový
Agrilus ater
Number: 5031
Received 1.9.2024
In progress: 1 days
Date of occurrence: 1.9.2024
Significance: Less harmful
Discussion
From: Jer Nusse
Assigned: M. Zúbrik
Country: The Netherlands

Question

Answer

Dear Jer, thank you for your inquiry. In your photos, there are feeding galleries likely caused by Agrilus ater. However, it cannot be determined if this insect species caused tree mortality in this case. Best regards, M. Zúbrik
Number of votes for this answer: 0

Pest

Agrilus ater

Agrilus ater

Agrilus ater

Agrilus ater

hmyz

Received: 1.9.2024
Wood: Poplar
Number: 5031
Date of occurrence: 1.9.2024
Discussion

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Leaf spot pathogen
Marsonína brezováMarsonína brezováMarsonína brezová
Leaf spot pathogen
Number: 5021
Received 29.8.2024
In progress: 3 days
Date of occurrence: 29.8.2024
Significance: Less harmful
Discussion
Assigned: A. Kunca
Country: United Kingdom

Question

Answer

I think it is Marssonina betulae on leaves. AK.
Number of votes for this answer: 0

Pest

Leaf spot pathogen

Marssonina betulae

Leaf spot pathogen

Marssonina betulae

huby

Received: 29.8.2024
Wood: Breza
Number: 5021
Date of occurrence: 29.8.2024
Discussion

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Flower chafers Cetoniinae
Flower chafers Cetoniinae
Number: 5019
Received 28.8.2024
In progress: 0 days
Date of occurrence: 28.8.2024
Significance: Less harmful
Discussion
Assigned: M. Zúbrik
Country: Sweden

Question

Answer

Dear Sverker, this is a larva of some species of a beetle from the group of Cetoniinae. Larvae of these species are not harmful as they live in dead wood. Adults can feed on fruit and flowers and can make some injuries. Wish you have a nice day. M. Zubrik
Number of votes for this answer: 0

Pest

Flower chafers Cetoniinae

Cetoniinae

Flower chafers Cetoniinae

Cetoniinae

hmyz

Received: 28.8.2024
Wood: -
Number: 5019
Date of occurrence: 28.8.2024
Discussion

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Linden jewel beetle
Krasoň lipový
Linden jewel beetle
Number: 4963
Received 16.8.2024
In progress: 3 days
Date of occurrence: 16.8.2024
Significance: Less harmful
Discussion
From: Andrej
Assigned: J. Galko
Country: Slovakia

Question

Answer

Dobrý deň. Vzhľadom na tvar a veľkosť výletového otvoru ide pravdepodobne o výletový otvor krasoňa lipového (Lamprodila rutilans). S pozdravom JG
Number of votes for this answer: 0

Pest

Linden jewel beetle

Lamprodila rutilans

Linden jewel beetle

Lamprodila rutilans

hmyz

Received: 16.8.2024
Wood: Lipa
Number: 4963
Date of occurrence: 16.8.2024
Discussion

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Oak burncow
Oak burncow
Number: 4926
Received 6.8.2024
In progress: 0 days
Date of occurrence: 6.8.2024
Significance: Less harmful
Discussion
From: Jer Nusse
Assigned: M. Zúbrik
Country: The Netherlands

Question

Answer

Dear Jer, thanks for your request. This looks like a gallery causes by the early stage of larva of the beele Coraebus fasciatus, also know under the name Coraebus florentinus. It can be serious pests of oak forests. With best regards M. Zubrik  
Number of votes for this answer: 0

Pest

Oak burncow

Coraebus florentinus

Oak burncow

Coraebus florentinus

hmyz

Received: 6.8.2024
Wood: Oak
Number: 4926
Date of occurrence: 6.8.2024
Discussion

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Oak splendour beetle
Oak splendour beetle
Number: 4825
Received 14.7.2024
In progress: 1 days
Date of occurrence: 14.7.2024
Significance: Very harmful
Discussion
From: Jer Nusse
Assigned: J. Galko
Country: The Netherlands

Question

Answer

Horizontal tunnels on oaks like this are created by Agrilus biguttatus larvae. This gallery looks pretty old. All the best, JG.
Number of votes for this answer: 0

Pest

Oak splendour beetle

Agrilus biguttatus

Oak splendour beetle

Agrilus biguttatus

hmyz

Received: 14.7.2024
Wood: Oak
Number: 4825
Date of occurrence: 14.7.2024
Discussion

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