On the basis of forest pathology survey of pine plantations of the Bryansk region for the period of 2011-2014, the nature of the centers of the European pine sawfly is studied and the reasons for their change are established. Works are made in the definition of the number of larvae per one tree in the growth phase of the outbreak, cocoons, male adults, and the sanitary conditions of pine forests on 5 plots in pest outbreaks are evaluated. The area of distribution of foci ranged from 896.6 to 8176.8 ha depending on the year of survey and prevailed in maturing pine plantations. There was a wide range of defoliation of trees - from mild to complete. Average condition category of plots in pine plantations, partially restored after damage was 1.84-2.42. The average number of sawfly larvae per tree has reached an average of 308 pieces. Previously unknown method for selecting the place of their cocoon - a thicker crust of fodder trees is discovered. Relatively low density of sawfly cocoons in the forest litter - 1-17 pcs/m2 is set. At the regional level for the first time, to assess the intensity of the flight of the European pine sawfly and prognosis of foci used pheromone traps were used. The number of males caught in traps varied over wide limits. Mixed results when comparing the two observation periods in 2013 and 2014 are got and the dependence of flight on the weather conditions at that time is shown. Broad ecological plasticity of this species in its ability to form foci in various conditions is confirmed.
European pine sawfly, pine plantations, foci, defoliation, pheromones supervision, diapause
1. Vishnyakova, S.V. Osobennosti leta i yaytsekladki ryzhego sosnovogo pilil´shchika v nasazhdeniyakh Bryanskogo regiona [Tekst] / S.V. Vishnyakova. Aktual. problemy lesnogo kom-pleksa: sb. nauch. tr. / Bryan. gos. inzhener.-tekhnol. akad. - Bryansk, 2010. - Vyp. 26. - S. 82-85.
2. Vishnyakova, S.V. Osobennosti vredonosnosti ryzhego sosnovogo pilil´shchika i bor´by s nim v sosnovykh kul´turakh [Tekst] / S.V. Vishnyakova. Aktual. problemy lesnogo kompleksa: sb. nauch. tr. - Bryansk : Bryan. gos. inzhener.-tekhnol. akad, 2012. - Vyp. 31.- S. 123-125.
3. Vishnyakova, S.V. K voprosu o raspredelenii v nasazhdeniyakh Bryanskoy oblasti ochagov ryzhego sosnovogo pilil´shchika [Tekst] / S.V. Vishnyakova. Aktual. problemy lesnogo kompleksa: sb. nauch. tr. - Bryansk : Bryan. gos. inzhener.-tekhnol. akad, 2012. - Vyp. 31. - S. 120-123.
4. Gur´yanova, T.M. Tsiklichnost´ razmnozheniya ryzhego sosnovogo pilil´shchika [Tekst] / T.M. Gur´yanova. Lesovedenie. - 1986. - № 4. - S. 23-30.
5. Il´inskiy, A.I. Nadzor, uchet i prognoz massovykh razmnozheniy khvoe- i listogry-zushchikh nasekomykh [Tekst] / A.I. Il´inskiy. - M. : Lesnaya prom-st´, 1965. - 525 s.
6. Meshkova, V.L. Defoliatsiya i kategorii sostoyaniya derev´ev sosny v ochage ryzhego sosnovogo pilil´shchika v svezhey subori Luganskoy oblasti [Tekst] / V.L. Meshkova, M.S. Kolenkina. Lesovedenie, 2014. - №1. - S. 34-41.
7. Primenenie feromonov vazhneyshikh vrediteley lesa pri vedenii lesopatologiche-skogo monitoringa [Tekst] / A.D. Maslov, N.I. Lyamtsev, Yu.A. Sergeeva i dr. - Pushkino : VNIILM, 2013. - 36 s.
8. Rukovodstvo po planirovaniyu, organizatsii i vedeniyu lesopatologicheskikh obsle-dovaniy [Tekst] : prilozhenie 3 k prikazu Rosleskhoza ot 29.12.2007 № 523. - M., 2007. - 16 s.
9. Rukovodstvo po proektirovaniyu, organizatsii i vedeniyu lesopatologicheskogo mo-nitoringa [Tekst] : Prilozhenie 1 k prikazu Rosleskhoza ot 29.12.2007 № 523.-M.,2007.- 66 s.
10. Shepel´, I.A. Rasprostranenie ryzhego sosnovogo pilil´shchika v sosnovykh nasazhdeniyakh Bryanskoy oblasti i prognoz razvitiya ochagov [Tekst] / I.A. Shepel´, V.A. Kuchuk. Aktual. problemy lesnogo khoz-va i landshaft. arkhitektury: materialy nauch.-prakt. konf. - Bryansk : Bryan. gos. inzhener.-tekhnol. akad, 2013. - S. 120-125.
11. Shepel´, I.A. Rasprostranenie ryzhego sosnovogo pilil´shchika v sosnovykh nasazhdeniyakh Bryanskoy oblasti v 2013 godu i prognoz razvitiya ochagov [Tekst] / I.A. Shepel´, G.A. Kisternyy. Aktual. problemy sist. lesoupr., lesopol´zov. landshaft. arkhitektury: materialy mezhdunar. nauch.-prakt. konf. - Bryansk : Bryan. gos. inzhener.-tekhnol. akad, 2014. - S. 207-212.
12. Pilil´shchik sosnovyy ryzhiy [Elektronnyy resurs]. Roslesozashchita, TsZL Saratov-skoy oblasti. - Rezhim dostupa: http://www.rcfh-saratov.ru/depredator/Neodiprionsertifer.htm. - Zagl. s ekrana.
13. Bertucci, B.M. La tentredine nerastra del pino [Text] / B.M. Bertucci. Inform. Fitopatol., 1985. - An. 35. № 4. - P. 13-18.
14. Heliovaara, K. Reduced cocon size of diprionids (Hymenoptera) reared on pollutant affected pines [Text] / K. Heliovaara, B. Vaisanen. J. appl. Entomol., 1989. - Vol. 107, № 1. - P. 32-40.
