Purpose. To identify the present habitat and areas of high infestation of beet stem weevil in Ukraine. Меthods. Field study, analytical evaluation. Results. It was revealed that beet stem weevil as species occured in cenosis of Odesa, Kherson, Mykolaiv, Zaporizhzhia, Donetsk, Kharkiv, Poltava, Kirovohrad, Lviv, Khmelnytskyi Oblasts and the Autonomous Republic of Crimea. Significant development and high harmfulness of phytophage in sugar beet crops during 2011–2015 was registered in Kharkiv, Poltava and Sumy Oblasts. It is also likely that high infestation of beet stem weevils can be found in the northern districts of Dnipropetrovsk, Donetsk Oblasts and western districts of Luhansk Oblast, where, in the absence of sugar beet crops, they locally developed on weedy plants of the goosefoot and amaranth families. Conclusions. In recent years, global warming and general deterioration of agricultural sector created a favorable environment in southeast Ukraine for mass reproduction of beet stem weevil which, occupying free ecological niches, is transforming into a dangerous pest for sugar beet crops.