DIGITALNA ARHIVA ŠUMARSKOG LISTA
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(2004) mentioned that in Sicily, which is close to south border area of this insect, the ash weevil had only one generation per year. It was probably the matter of various interpretation of prolonged period of egg oviposition, which was sometimes in small number of overwintered females prolonged until June, which was interpreted as the occurrence of the new (second) generation. Prolonged oviposition period was also observed in our studies in the case of a strong attack, when all buds were destroyed, and females were waiting for the new leaves to lay their eggs in order to provide necessary food for their offspring. 5. CONCLUSIONS Zaključci Adults of ash weevil left winter shelters from the beginning of the second decade of March until the early April, depending on the air temperature. Copulation period started at the end of March or the beginning of April and lasted until the beginning of May. Oviposition began 12 to 22 days after female activation. Female fertility ranged from 30 to 104 eggs, and total fecundity from 58 to 109 eggs. Embryonic development ranged from 9 to 11 days. Ash weevil larvae were present on leaves from the second decade of April to the end of June. The greatest number of larvae fed on leaves from the beginning of the third decade of April until the end of the second decade of May. Larval development lasted from 16–20 days. During development larvae consumed average 3.3 cm2 of narrow leaved ash leaves. Cocoons formed from the beginning of May until the end of June, and the pupal stage ranged from 6 to 8 days. Adults of new generation occurred during the same year, from the beginning of the second decade of May till the beginning of July. After ecclosion adults of new generation performed feeding before overwintering. Average leaf area consumed by ash weevil during additional feeding is 2.5 cm2. Ash weevil had one generation per year. ACKNOWLEDGMENTS Zahvala This paper was realized as a part of the project »Studying climate change and its influence on the environment: impacts, adaptation and mitigation« (43007) financed by the Ministry of Education and Science of the Republic of Serbia within the framework of integrated and interdisciplinary research for the period 2011–2014. 6. REFERENCES Literatura Аndroić, M., D. Gavrilović, D. Grujić, M. Harapin, I. Jodal, M. Kuševska, D. Luteršek, LJ. Mihajlović, I Mikloš, K. Opalički, A. Popo, C. Sidor, I. Spaić, A Serafimovski, D. Tomić, K. Vasić, M. Glavaš, N. Gojković, M. Grujoska, S. Hočevar, D. Karadžić, V. Lazarev, P. Marinković, V. Papazov, M. Peno, S. Šmit, M. Usčuplić, I. Savić, D. Živojinović, 1981: Priručnik izveštajne i dijagnostičko prognozne službe zaštite šuma, Savez inženjera i tehničara šumarstva i industrije za preradu drveta Jugoslavije, 336, Beograd. Avramović, G., L. Poljaković- Pajnik, V. Vasić, P. 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