PARASITOID COMPLEX OF STEREONYCHUS FRAXINI (DE GEER) (COLEOPTERA, CURCULIONIDAE) IN SERBIA
2013
The parasitoid complex of the ash weevil Stereonychus fraxini (De Geer)
(Coleoptera, Curculionidae) from 20 localities in Serbia was studied.
Forty-one samples of ash weevil larvae and cocoons were analyzed, and the
presence of parasitoids was confirmed in 24 samples. Ten species of
hymenopteran parasitoids (Hymenoptera Parasitica) were recorded. The two
common eulophid wasps, Entedon zanara Walker and Entedon cionobius Thompson,
were the most abundant. Parasitoids had an insignificant influence on the
level of ash weevil population, because the level of infestation did not
exceed 20% in 83% of the samples; however infestation above 40% was
determined in 12.2% of the samples, indicating that in some cases parasitoids
may significantly reduce the ash weevil population. [Projekat Ministarstva
nauke Republike Srbije, br. III 43002]
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