ЛИТЕРАТУРА 



Бондаронко H. В. п Куан Хай-юань, 1958, Докл. Акад. Наук СССР, 119: 1247 до 

 1250. 



Данилевский А. С, 1956, Фотопериодизм, как регулятор сезонной цикличности на- 

 секомых. Чтения памяти Холодковского 1954 — 1955 г. Изд. Акад. Наук СССР, 

 М.-Л.: 32—55. 



— 1957а, Энто.иол. Обозр., 36: 5 — 27. 



— 19576, Вестник Ленинградского Университета № 21: 93 — 105. 



SUMMART 



Adaptation towards zonal-geographic changes of the seasonal course of the temper- 

 ature and photoperiodism tends to creation of local races in the area of the species. The 

 adaptative characters of local races are expressed in physiological reactions, regulating 

 the seasonal cycle of development, especially in the photoperiodic reaction. 



Also the thermal conditions for the reactivation of diapausing stages are different 

 in different local races. On the other hand, the adaptation of actively developing stages 

 towards the thermal conditions as well as the cold-resistance of hibernating stages show 

 a low degree of geographic changeability. 



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