Catches of male Dendrolimus tabulaeformis in delta-shaped traps baited with various blends of potential pheromone components between 1 and 14 August 2011 in the experimental forest of Ping'quan city, He'bei province, China.

aMeans followed by the same letter in column are not significantly different at the 5% confidence level by Tukey's tests (F(9,30) = 19.31, pb“—” indicate the components were not included.