The study is devoted to searching for alternatives to methyl bromide – a universal fumigant restricted in use at the request of the Montreal Protocol. Purpose: to determine the synergy of a mixture of phosphine and carbon dioxide in their various concentrations and exposures during the fumigation of leguminous products against pests at high temperatures. Methods: analytical review on the subject of research, the current regulatory framework in the field of disinfection; analysis of biological features of insect pests of leguminous products; experimental – a variation of different concentrations of phosphine, duration of exposure and temperature to establish a synergy of fumigant with carbon dioxide in laboratory conditions with appropriate equipment; mathematical and statistical – using computer mathematical functions built into the Microsoft Excel program 2003. When fumigating gas mixtures against pests at the imago stage, the optimal concentration of carbon dioxide is in the range of 110-130 g/m3 (or 5.5-6.5% of the total air volume), regardless of the temperature indicator. While the optimal concentration of phosphine at low temperatures (21-22°C) is in the range of 0.57-0.82 g/m3 , at high temperatures – (31-32°C) – in the range of 0.21-0.36 g/m3 . With an increase in the duration of fumigation, not only the effectiveness of phosphine (standart) against the imago pests but also gas mixtures. In addition, the dependence of gas synergy on the duration of fumigation was established. Thus, at a temperature of 30°C, an increase in gas synergy in the mixture was observed by 4.4±0.66, 7.7±1.61, and 10.3±1.08% compared to the standard for exposure of 2, 4 and 6 hours, respectively. Temperature was the most determining factor influencing the value of the gas synergy index in the mixture of phosphine and carbon dioxide. Thus, an increase in temperature from 30°C to 32°C contributed to an increase in the gas synergy index by 9%, that is, by 2.17 times. Further establishment of lethal standards and fumigation regimes against pests, including quarantine ones, can prevent economic damage from these pests in Ukraine and will contribute to the implementation of the decisions of the Montreal Protocol aimed at protecting the environment and preventing the destruction of the ozone layer

The first checklist of spider mites (Tetranychidae) of Transcarpathia, Ukraine is compiled based on the revision of collection materials stored in I. I. Schmalhausen Institute of Zoology of the National Academy of Sciences of Ukraine. The mite collections of I. Akimov, A. Putrashik, and of the authors were studied, thus covering a 45 year-long period of research of spider mites in the study region. The checklist includes 28 species of 10 genera of tetranychid mites, which is about 40% of the species diversity of spider mites in Ukraine. For each species, information is provided on the number of individuals (males, females, nymphs, and larvae), host plants, record localities (for own collections—with geographic coordinates), as well as data on distribution in other regions of Ukraine. The largest part of the collection includes the findings of common species, such as Amphitetranychus viennennsis, Bryobia rubrioculus, and Panonychus ulmi. The genus Eotetranychus is represented by the largest number of species (8). Two species (Eotetranychus quercicola Auger & Migeon, 2014 and Schizotetranychus beckeri Wainstein, 1958) are recorded for the first time for the fauna of Ukraine. In addition, 21 species of spider mites are noted for the first time for the territory of Transcarpathia. Three of the 11 species previously indicated for Transcarpathia, namely Oligonychus brevipilosus Zacher, 1932, Oligonychus lagodechii Liv. et Mitr., 1969, and Schizotetranychus jachontovi Reck, 1953 are not represented among the collection materials. In addition to the two taxa noted here for the first time in Ukraine, five species of tetranychids (Bryobia praetiosa, Bryobia lagodechiana, Eurytetranychus furcisetus, Schizotetranychus spireafolia, and Tetranychus frater), which were previously discovered in other regions of Ukraine, should be included in the electronic database of Spider Mites Web as those recorded in Ukraine. Eight host plant species are indicated for the first time for six spider mite species (Eupatorium cannabinum for B. praetiosa, Armoracia rusticana, Betonica officinalis, and Melilotus officinalis for B. lagodechiana, Picea abies for E. furcisetus, Ribes nigrum for A. viennensis, Quercus robur for E. quercicola, and Salix glauca for S. shizopus).