Correlation between flight activity of sawflies Pristiphora abietina, P. saxesenii, P. gerula and P. leucopodia (Hymenoptera: Tenthredinidae) and spruce (Picea abies) bud breaking in Eastern Czech Republic

Abstract

The flight activity of spruce tenthredinids were studied using Malaise traps and yellow sticky boards in young spruce forests in the Nízký Jeseník Hills during years 2005 and 2006. In most cases, studied species (Pristiphora abietina, Pristiphora saxesenii, Pristiphora gerula, Pristiphora leucopodia) showed a statistically significant correlation between numbers of specimens caught at two- or three-day periods and numbers of budded spruces in both years.

Keywords

• pristiphora abietina
• pristiphora saxesenii
• pristiphora gerula
• pristiphora leucopodia
• malaise trap
• yellow sticky boards
• flight activity
• spruce bud breaking
• correlation