Species composition of insects on larch in the plantings CSBG SB RAS (Novosibirsk)

Abstract

Larch (genus Larix Mill.) is one of the key representatives of coniferous trees in the boreal forests of Siberia, which plays a very important ecological and economic role. The formation of entomofauna specific to larch in green areas is an area of scientific interest and requires study. Therefore, the purpose of the research was to identify and determine the species composition of larch pests in the plantations of the Central Siberian Botanical Garden SB RAS. As part of the research, a complex of phytophages was identified and divided into pests of fruits and seeds: (Lasiomma laricicola Karl., Dioryctria adietella Denis & Schiffermuller), pests of needles: (Diprion pini L., Adelges laricis Vallot.) and pests of kidneys: (Dasineura laricis F. Low.). As a result of our research, it was revealed that the most common species are Adelges laricis Vallot., Dasineura laricis F. Low., Diprion pini L., which were found during examinations on more than 5 samples of larch of different origin (Larix sibirica Ledeb., Larix gmelinii Rupr., Larix gmelinii Rupr., Larix decidua, Larix kampferi). Rare specimens (Lasiomma laricicola Karl.) were found on two species of larch Larix cajanderi Mey. and Larix sibirica Ledeb. A very rare species of phytophagus, Dioryctria adietella Denis & Schiffermuller, was found on a single sample of Larix sibirica Ledeb. As a result of the research, entomophages, representatives of the orders Coleoptera, Neuroptera, Hymenoptera, Diptera, have been identified, which can potentially be used to protect larch from populations of the most dangerous pests, contributing to the preservation of decorative plants and improving the aesthetic appearance of plantings.