DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 11-12/1960 str. 28 <-- 28 --> PDF |
LITERATURA: 1. Gyorfy : Krankheiten und Schadlinge der Pappeln in Ungarn. Acta agronomica Academiae scientiarum Hungaricae, Tomus II. Fasc. 1, Budapest 1952. 2. Kovačević : Primijenjena entomologija, III. knjiga: šumski štetnici. Zagreb 1957. 3. Noyori : Pygaera anastomosis L. J. Plant Prot. XVI. pp. 392—404. Tokyo 1929. 4. Pfeffer : Lesnicka zoologie II. Prag 1954. 5. Rohrig : Ubersicht uber die bisher beobachteten Insekten an der Pappel. Anz. Schadlingsk., 10, 1955. 6. Schimitschek : Zur Kenntnis des Pappelschadlings Pygaera anastomosis L. Anz. Schadlingsk., 10, 1955. 7. Wettstein : Erstes schadliches Auftreten von Pygaera anastomosis L. (Lep.) in Osterreich. Anz. Schadlingsk., 10, 1955. 8. Živo j in o vic : Najznačajniji štetni insekti mekih lišćara u toku 1956. godine. »Topola« br. 2, Beograd 1957. PYGAERA ANASTOMOSIS L. A NEW INSECT PEST ON POPLARS Summary In the last 7 years there have occured in our countrv several mass outbreaks of the Poplar Moth (Pygaera anastomosis L., Notođontidae, Lepiđoptera). The strongest attack as to area and intensity took place on the 163 ha Poplar plantation »Vijuš« near SI. Brod. As this species represents a new insect pest on Poplars the author presents a few more important data from its biology on the basis of his own investigations. Pygaera anastomosis L. produces in a year or partially 4 generations. The caterpillars of the second and third developmental stages hibernate in bark shakes on the stem similarly as the Stilpnotia salicis L. does. For the first time in the year caterpillars emerge in April and butterflies in May. In September a part of the caterpillars start their spinning in order to overwinter while the other continue with their development and produce another generation. The caterpillars of this generation spin in October similarlv as those of the preceding generation, and hibernate. On an everage the female lays 500—600 eggs and sometimes even over 1.000. Rearing in the laboratory showed that the feeding with the Euramerican Poplar varieties is more satisfactory than with the native Poplar species. Taking into consideration the ever larger areas under cultivation with the Euramerican varieties it can be expected that the importance of this insect pest will yet increase in the future. ´ć 70 |