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.
Dear Andrea, Thank you for your inquiry. The information provided is not sufficient to determine the cause of the damage. If it is indeed an elm (the photograph does not make this entirely clear), it is worth noting that a whole group of bark beetle species from the genus Scolytus can affect elm trees. You can read more about them here: https://www.forestpests.eu/pest/scolytus-spp&rurl=YXRsYXMmYW1wO2ZpbHRlcj00OCZhbXA7cD00. However, other possible causes of the damage cannot be ruled out either. Have a nice day, M. Zúbrik
Hello,this type of damage is caused by species of the genus Tomicus. It is either Tomicus piniperda or Tomicus minor. The beetles are similar. They damage the twigs with their maturation feeding. The larvae live under the bark of dying or damaged (broken) pine trees. Removal or burning of dying and damaged pine trees is used as protection.
Best regards
Jozef Vakula
Dear Aliaksandr,
thank you for your question. According to the photo it is probably Brefeldia maxima, or Symphytocarpus amaurochaetoides. Without detailed laboratory analysis, but we are not completely sure.
Best regards,
V. Longauerová
Dear Aliaksandr,
thank you for your question. According to the photo it is probably Coniophora puteana. Without detailed laboratory analysis, but we are not completely sure.
Best regards,
Valeria Longauerová
Dear Ignacio, thank you for your inquiry. Browning of leaf edges is most commonly caused by a physiological issue. This can include extreme dryness, lack of moisture, intense sunlight, or a combination of these factors. The impact of emissions cannot be ruled out either, especially if the tree is growing near a road. Insects or fungi generally do not cause this type of damage—or if they do, it is less common. Moreover, in the photo, I do not see any insect or fungus that could potentially cause such damage under certain circumstances. Best regards, M. Zúbrik
Dear Mohamed, thank you for your request. There is a Diptera species in the picture, but it does not look like any known citrus pest. It is definitely not Ceratitis capitata, commonly known as the Mediterranean fruit fly or medfly, which is a very dangerous pest of citrus. In any case, it appears to have been attacked by an entomopathogenic fungus (possibly Beauveria bassiana), which likely killed it. Best regards, M. Zúbrik
Thank you for your interesting inquiry and the lovely photograph. It’s unfortunate that the leaf is dead (an autumn aspect), making the damage less visible. It strongly resembles the mite Aceria nervisequa faginea, but since I am not completely certain, I would place this in the category of ambiguously identified species. If this were in summer and the photo included the underside of the leaf, identification would be clearer. Thank you once again.With best regards M. Zubrik
Hello, thank you for your interesting inquiry. Such small holes are usually caused by small beetles that consume plant tissues to allow their reproductive organs to mature, a process known as maturation feeding. From these symptoms alone, it is not possible to determine the exact species involved. The most likely candidates are Chrysomela vigintipunctata or Lochmaea caprea, as these species are probably the most common in your area. With best regards M. Zubrik
