Pheromone baited bucket traps (e.g., Multipher) are popular as a monitoring tool for the jack pine budworm, Choristoneura pinus pinus Freeman (Lepidoptera: Tortricidae), in Canada. However, there is no evidence to support their use when budworm populations are low. We therefore evaluated the capture rate of bucket traps at two placement heights (2 vs 6 m) in two jack pine forests in 2011, having low (≤5 fifth instars per mfoliated branch length) budworm populations. Compared to wing traps (e.g., Pherocon 1C), the trap design used initially to evaluate efficacy of the C. pinus pheromone, bucket traps caught fewer C. pinus and capture rates of both trap designs did not differ significantly between the two heights tested. Loss of bucket traps at 2 m, due to black bears, suggested that higher placement of traps was warranted to maintain the integrity of the array. However, wing traps are recommended due to their ability to consistently catch more moths when C. pinus populations are low.
Fidgen, J. G.; Silk, P.; Ryall, K. L.; and Scarr, T.
"Improvement of Pheromone Trapping in Low Density Populations of Choristoneura Pinus Pinus (Lepidoptera: Tortricidae),"
The Great Lakes Entomologist: Vol. 47
, Article 12.
Available at: https://scholar.valpo.edu/tgle/vol47/iss1/12