Contribution to the knowledge of development and harmfulness of imported willow leaf beetle (Plagiodera versicolora) (Coleoptera, Chrysomelidae)
J. Urban
https://doi.org/10.17221/4582-JFSCitation:Urban J. (2005): Contribution to the knowledge of development and harmfulness of imported willow leaf beetle (Plagiodera versicolora) (Coleoptera, Chrysomelidae). J. For. Sci., 51: 481-507.1st generation takes about 21 (in the laboratory about 15) days. Imagoes of the 1st generation occur on trees from the end of May to mid-August and die after completing their reproduction. Plagiodera versicolora creates 3 to 4 (in the laboratory 4 to 6) generations during a year. The small part of imagoes of the 2nd generation, predominant part (or all) imagoes of the 3rd generation and under conditions of a tetravoltine development all imagoes of the 4th generation enter a diapause. In the course of the growing season, the food consumption of imagoes and larvae decreases and fecundity of females markedly decreases. Schizonotus sieboldi (Ratz.), Medina melania (Meig.) and M. luctuosa (Meig.) rank among main enemies of Plagiodera versicolora.
Plagiodera versicolora; Chrysomelidae; occurrence; development; fecundity; enemies; economic importance
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SJR (2019) – 0.273
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