Distribution and biology of invasive species of bean bruchid Acanthoscelides obtectus (Insecta, Coleoptera, Bruchidae).
A review of the literature on the ecology, biology, distribution of bean bruchid (Acanthoscelides obtectus) and its main food plant Phaseolus vulgaris in North and South America, Europe, Africa, Asia, and Australia and in more detail in Russia is presented. The review also considers the influence of abiotic, biotic, and anthropogenic factors on the invasive process and phytosanitary condition of common bean crops in Russia. Some aspects of the management of the invader are shown. The main stages and areas of cultivation of common bean and invasion of bean bruchid from their primary range in South America and in the south of North America are traced; the vectors and reasons causing them are considered. In Russia, the economic importance of bean bruchid has increased since the mid-1980s, which coincided with the climate warming; there was an expansion of its distribution in the eastern and northwestern directions. In the last decades of the 20th century, it penetrated into Smolensk and into the south part of Tver and the Tomsk Regions. With the increase in production of beans in Russia, the lack of systemic protection from bean bruchid and further increase in climate warming will contribute to the extension of its range to the north in the European part of Russia and the Urals to 57°-58° N, where the conditions of the summer period are favorable for development of common bean and bean bruchid. To the east, it may spread to Tyva, Buryatia, Zabaykalsky Territory, Amur Region, the Jewish Autonomous Region, and the southern part of Khabarovsk Territory. With the introduction of strict internal quarantine and a system of protection of common bean from this pest which prevents the spread of infected dry bean, on the contrary, it is possible to reduce the range of distribution of the bean bruchid, with its disappearance in the Siberian and Ural districts and Bashkortostan and Tatarstan.