Features Phenology Listogryzushchie Fillofagi in the South Preduralye
Installed phenological characteristics of the gypsy moth (Limantria dispar Linnaeus, 1758), yellowtail (Euproctis chrysorrhoea Linnaeus, 1758) and green oak leaf roller (Tortrix viridana Linnaeus, 1758) in terms of the Southern Urals. Development of gypsy moth pupae, which averages 28 days with a daily average amount of accumulation of positive temperatures 598°C. Adults fly fillofagi occurs during the first decade of July to the second decade of August. The phase of adults out of 33 days in the accumulation of 699°C average daily amount of positive temperatures. The general development of the gypsy moth in the conditions of the Southern Urals occurs within one year, the sum of effective temperatures in conditions of extreme continental climate of the Orenburg region with numerous recurrent coolings spring and early frosts of autumn of 1900°C on average. Yellowtail in recent years creates lesions mainly in the central and southern parts of the Orenburg region, which are characterized by higher temperatures in spring and summer, the lack of recurrent cold weather of spring, when the caterpillars finish feeding and begin to pupation. The phase of the caterpillars takes an average of 40 days in the accumulation of 402°C average daily amounts of positive air temperatures. Yield of winter caterpillars silken nests occurs in the last ten days of April, on average, 25.04. During the period of studies have shown that the phase of the pupa takes on average 29 days. Sum of average daily air temperature is positive 579°C. Moth flight continues, on average, 29 days at average daily accumulation of the sums of positive temperatures 612°C. Sum of effective temperatures required to complete the life cycle was about 1600°C. Early summer butterflies green oak leaf occurs in early June. Mass is observed after 10 years - 12 days. Years stretched on average two weeks. Sum of effective temperatures development of green oak leaf - about 1140°C.