From 2018 have passed 6 years since an invasive species from Europe – the Ohrid miner Cameraria ohridella (Lepidoptera: Gracillariidae) penetrated into the Lower and Middle Volga region and began to actively populate urban landscapes with horse chestnut plantings. For are the example of the regional center of Saratov, the temporary aspects of settlement and damage to horse chestnut trees over the specified period are considered.
