Diabrotica virgifera virgifera Le Conte called western corn rootworm was signaled for the first time in our country, in 1996, in the Arad District (Nădlac). In 1997 it was detected in the Timis District too, which neighbors with the Arad District and with Yugoslavia and Hungary. This scientifically papers present the results concerning the pest's evolution in some localities (Simand -140 m, Soimi -145 m, Blaja-150m, Nusfalau –214 m, Prisaca -270 m Negreni- 388 m and Budureasa –403 m) from western part of country (South-West–North of Romania), in 2009. Selection of these locations was based on altitude, from plain until mountain. For monitoring of the adults were used hungarian pheromone traps (Csalomon ® Diabrotica v.v. tip panou/2). The traps were installed from June to September. The frequency of Diabrotica virgifera virgifera Le Conte adults was manifold, based on location and ecological conditions. The highest number of adults was registered to Simand locality (21323 captures), that is placed in a low altitude, by140 m. The lowest number of adults was captured to beginning of 403 m altitude (2156 captures), in Budureasa locality. It’s important to point that number of captures decreased while the altitude increased. It results that Diabrotica virgifera virgifera Le Conte is a large disseminated pest in the western part of country and in consequence his control will be necessary. The results were obtained by financially and material support of PN-II-ID-PCE-2007-1/RO (889) project.

Diabrotica; monitoring; pheromone; trap; flight dynamic

Presentation: oral