UDC 632.08
The distribution of the larvae of the beetles Mordellistena parvulliformis Stshegol-Bar. and Mordellistena parvula Gyll. is examined. It is concluded that the main reasons for the deteriorating phytosanitary situation are changes in technology and variety composition, as well as the expansion of sunflower cultivation areas between 1991 and 2010. One of the objectives of the study was to assess the harmfulness of Mordellistena beetle larvae in the Voronezh Region. The research was conducted from 2021 to 2025 in the forest-steppe zone in the north of the region. As a result, a negative correlation was found between the number of Mordellistena beetle larvae and yield. A regression equation was obtained that determines the dependence of the decrease in sunflower oilseed yield on the increase in the number of Mordellistena beetle larvae in the crop stems. Estimates show that a 5% yield reduction is observed at a population density of 0.73 larvae per sunflower stem.
Mordellistena parvula, sunflower pests, economic damage threshold, yield
1. Alehin, V. T. Ekonomicheskie porogi vredonosnosti vrediteley, bolezney i sornyh rasteniy v posevah sel'skohozyaystvennyh kul'tur / V. T. Alehin, V. V. Mihaylikova, N. G. Mihina. – M. : FGBNU «Rosinformagroteh», 2016. – 76 s.
2. Artohin, K. S. Zaschita podsolnechnika ot vrediteley, bolezney i sornyakov / K. S. Artohin, P. K. Ignatova. – M : Kolos, 2015. – 32 s.
3. Vrediteli sel'skohozyaystvennyh kul'tur i lesnyh nasazhdeniy. Vrednye chlenistonogie, pozvonochnye. – Tom 2. – Kiev : Urozhay, 1974. – 575 s.
4. Dobrovol'skiy, B. V. Vrednye zhuki / B. V. Dobrovol'skiy. – Rostov-na-Donu : Rostovskoe oblastnoe knigoizdatel'stvo, 1951. – 456 s.
5. Zaschita vshodov podsolnechnika ot bolezney i pochvoobitayuschih vrediteley / V. T. Piven', N. V. Muradasilova, I. I. Shulyak, T. P. Alifirova, S. A. Semerenko // Nauchno-tehnicheskiy byulleten' Vserossiyskogo nauchno-issledovatel'skogo instituta maslichnyh kul'tur. – 2010. – Vyp. 1. – S. 14-22.
6. Fedorenko, V. V. Yuzhnaya podsolnechnikovaya shiponoska v Ukraine / V. V. Fedorenko, N. P. Sekun, N. N. Demenyuk // Zaschita i karantin rasteniy. – 2009. – № 8. – S. 38-40. EDN: https://elibrary.ru/KXXIOL
7. Fokіn A. V., Moroz S. Yu. Ocіnka shkіdlivostі kompleksu vnutrіshn'osteblovih shkіdnikіv sonyashniku // Tavrіys'kiy naukoviy vіsnik. – 2021. – № 118. – S. 189-199. – https://doi.org/10.32851/2226-0099.2021.118.23. EDN: https://elibrary.ru/ZSVQGK
8. Schegolev, V. N. Nasekomye, vredyaschie maslichnym kul'turam / V. N. Schegolev, M. P. Strukova. – M.-L. : GIS, 1931. – 224 s.
9. Schegoleva-Borovskaya, T. I. O treh novyh palearkticheskih vidah iz sem. Mordellidae (Coleoptera) / T. I. Schegoleva-Borovskaya // Ezhegodnik Zoologicheskogo muzeya AN SSSR. – 1927. – Vyp. 2. – S. 158-161.
10. Fedorenko V. P., Gornovska S. V. Reasons for the appearance of a new pest – sunflower tumbling beetle (Mordellidae, Mordellistena parvulliformis) – in Ukraine // Vesci nacyyanal'nay akademii navuk Belarusi. Seryya agrarnyh navuk. – 2014. – № 4. – P. 61- 65. EDN: https://elibrary.ru/TRPIDR
11. Fedorenko V., Hornovska S., Fedorenko A. Distribution and harmfulness of Mordellistena parvulliformis in the left bank steppe of Ukraine // Zahist і karantin roslin. – 2021. – Vip. 67. s. 337-348 DOI: https://doi.org/10.36495/1606-9773.2021.67.337-348
12. Peter A. Edde. Field Crop Arthropod Pests of Economic Importance. Academic Press, 2021. –P. 74-139. ISBN: 9780128186213. DOI: https://doi.org/10.1016/B978-0-12-818621-3.00009-4
13. Rogers C. E. Insects from native and cultivated sunflowers (Helianthus) in southern latitudes of the Unated States // Jornal Agricultural Entomology. 1988. – V. 5, № 4. – P. 267-287.
14. Voicu M., Ivancia V. The beetle Mordellistena parvula Gyll. (Coleoptera, Mordellidae), a new sunflower pest in Romania // Rom. Agric. Res. – 1996. – № 5. – P. 83-85.
