The pine sawyer beetle
Monochamus galloprovincialis
(Olivier) (Coleoptera Cerambycidae) gained importance as a pest in Europe after the introduction in Portugal of the pine wood nematode
...Bursaphelenchus xylophilus
, the agent of pine wilt disease. As the nematode is transmitted by the adult beetles during both maturation feeding and oviposition, effective methods of monitoring of the longhorn beetle populations are needed for the surveillance of the disease spread in Europe. Although in the last years many studies focused on the efficacy of different trapping methods, the general results are still controversial. In this study, we compared the efficiency of two trap types, cross-vane and multi-funnel, and two attractive blends, a kairomonal lure (α-pinene, ipsenol and methyl-butenol) and a commercial kit specific for
M. galloprovincialis
(pheromone plus kairomonal lure), in order to identify the trap/blend combination more appropriate for the surveillance of the
M. galloprovincialis
populations. Moreover, the trap efficiency was tested also in a pine stand colonized by
M. galloprovincialis
after a hailstorm and in a control stand. The results showed that the multi-funnel traps baited with the specific commercial kit was the most effective combination. Interestingly, trap catch was similar in the two pine stands, despite a different density of the target species. As the trapping method was effective also at low population density of
M. galloprovincialis
, it may be adopted as a general tool for beetle surveillance in the forest and at ports of entry.
Differences in the number of Platypus koryoensis (Murayama) (Coleoptera: Platypodidae) trapped in different trap types, colors and positions on the trunk were evaluated to develop a monitoring trap ...for Platypus koryoensis, a known vector of Korean oak wilt disease. The experiments were conducted in an oak forest located in Gwangtan-myeon, Paju-si, Gyeonggi-do, Korea using two types of trap: sticky trap and multi-funnel trap. Trapping efficiency of the two trap types was not significantly different. Trapping efficiency of the sticky trap was not affected by four trap colors: yellow, black, white and transparent. The number of beetle caught was higher in the traps facing the upper slope than the lower slope regardress of trap type. Our results showed that both traps type are useful for monitoring Platypus koryoensis.
As part of an ongoing project to improve survey and detection for the emerald ash borer, Agrilus planipennis, several field assays were conducted to (1) determine how often traps need to be checked ...during a given field season, and (2) compare the effectiveness of traps with “dry” (with insecticidal strips or internal funnel) vs. “wet” (with propylene glycol surfactant) collection cups. There were no significant differences among any of the trap check intervals or the trap methods tested. This will provide new tools to surveyors, and allow them more flexibility as they survey for this invasive pest.
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