Insect pests of cereals in croatia

Wheat is sown in Croatia on an average 220.000 ha each year. Additonally barley, rye, oats and triticale are sown on approximately 44.000 ha. These crops are attacked by many insect pests. Among them are Frankliniella tritici (Fitc) (Thysanoptera: Thripidae), Eurygaster austriaca Schrank (Hemiptera: Scutelleridae) E. maura (L.) Sitobion avenae Fab. (Homoptera:Aphididae), Rhopalosiphum padi (L.) (Homoptera: Aphididae), Metopolophium dirhodum Walker (Homoptera:Aphididae), Zabrus tenebrioides Goeze (Coleoptera:Carabidae), Oulema melanopus L. (Coleoptera: Chrysomelidae), O. gallaeciana (Heyden) and a complex of poorly known cereal flies. Information on the pest complex in Croatian cereals will be presented. However, more detailed data on cereal aphids, including data on the flight dynamics based on catches in the standardised R.S. Agaphid station will be presented. Moreover, the Croatian decision tresholds for control of aphids in cereals will be explained. The most important pest in cereals in Croatia are cereal beetles, especially O. melanopus. Data on their dynamics, control and decission treshold will be presented.