Z. IMREI, M. TOTH
Plant Protection Institute, Hungarian Academy of Sciences
G. VÖRÖS
Tolna-megye Station of Extension Plant Protection Service, Szekszárd, Pf 104., Keselyæsi út 7.; 7101
I. SZARKAN, T. GAZDAG, A. SZEREDI
Agricultural University, Debrecen, Pf. 58, H-4001, Hungary

The present results come from the first year of a study aiming at the evaluation the trap types developed at our lab in Hungary or catching Diabrotica v. virgifera. Results are presented on trap types PAL (pheromone baited), PALs (floral attractant baited) and VARs (baited with both pheromone and floral  baits). For comparison, yellow sticky traps were also included. Traps were tested at three sites in Hungary in 2001.

Males were detected earliest in pheromone baited traps PAL and VARs at approximately at the same time. Later on large numbers of males were continuously captured.

First female catches were recorded much later than male captures, predominantly in both traps with floral lures - PALs and VARs. The two types captured females during similar periods. There were too few beetles in unbaited traps to draw conclusions about natural sex ratios and sex ratios captured in the different trap types. Next year natural sex ratios are planned to be studied through non-discriminating sampling methods parallel to continuos operation of the trap types with the respective baits.

Work carried out within the framework of EU DIABROTICA project (QLK5-CT-1999-01110)