Foliage browsing insects of Chihirin pine forest
Journal Title: Лісівництво і агролісомеліорація - Year 2014, Vol 124, Issue
Abstract
In 2012–2013, 10 foliage browsing insect species were found in forest stands of Chihirin pine forest. Biological peculiarities were specified for the species, which can be injurious for region. These species are Lepidoptera: Dendrolimus pini L.; Hyloicus (Sphinx) pinastri L.; Panolis flammea L., Bupalus piniarius L. and Hymenoptera: Diprion pini L., Acantholyda hieroglyphica Christ., A. erythrocephala L., A. posticalis Mats., as well as accompanying species of pine sawflies: Gilpinia frutetorum F. and Gilpiniа virens Klug. Population density of all foliage browsing insects was low. Density of cocoons of Diprion pini and accompanying species of pine sawflies has considerably decreased in 2013 as compared with 2012. Among factors of regulation of pine sawflies population, parasitoids played the most important role (over 70 % colonized cocoons). In dry bor all revealed foliage browsing insects were found with domination of accompanying species of pine sawflies. Larvae of Bupalus piniarius were found only in bor, larvae of Hyloicus (Sphinx) pinastri mainly in dry bor and soubor. Dendrolimus pini dominated in dry and fresh soubor in the stands of VI–VII age classes, where its chronic foci are usual.
Authors and Affiliations
O. Kukina
Keywords
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