An improved trap for large wood-boring insects, with special reference to Monochamus scutellatus (Coleoptera: Cerambycidae)

Abstract

Commercially available multiple funnel traps have three potential limitations for trapping large wood-boring insects: (i) escape by captured insects from the dry collecting cup, (ii) low catches of insects that fall outside the trap, and (iii) poor visual orientation to the narrow funnel column. To test the importance of these limitations, we compared conventional multiple funnel traps to multiple funnel traps with water-filled collecting cups or large bottom funnels and to crossvane traps with a prominent silhouette. The experiment was conducted in a mill yard in the southern interior of British Columbia between 5 July and 2 October 2000. Differences in catch among different trap types indicated that the first and third of the three potential limitations were important for the capture of most target species. Crossvane traps captured significantly greater numbers of most Cerambycidae and Siricidae, and similar numbers of most Buprestidae, compared with the other traps. Of the two most abundant species, Xylotrechus longitarsus Casey was captured in consistently greater numbers in crossvane than in other traps, but Monochamus scutellatus (Say) showed little discrimination early in the flight season and much higher captures in crossvane traps late in the season. The change in behaviour of M. scutellatus may be related to a transition from maturation feeding to searching for oviposition sites.

Des composés émis par les arbres-hôtes stressés sont attractifs pour le cérambycidé Monochamus alternatus

“…The importance of visual cues in host selection behavior has been reported in many phytophagous insects [2,4,10,19,24], and studies have demonstrated that visual cues are used in the host-finding behavior of Cerambycid species [8,17,18]. Further studies on how visual cues are utilized in combination with attraction to host volatiles should clarify the host selection precess of M. alternatus.…”

Pine volatiles and terpenoid compounds attractive to European xylophagous species, vectors of Bursaphelenchus spp. nematodes

“…The insecticide prevented beetles from escaping from the funnel traps and allowed us better to compare the capture levels of the two trap types (Allison et al 2001(Allison et al , 2003Morewood et al 2002;Pajares et al 2004). Traps were examined weekly.…”

A review of the chemical ecology of the Cerambycidae (Coleoptera)

“…Allison et al (2003) suggest that adding the bark beetle pheromone(s) ipsenol and/or ipsdienol to α-pinene and ethanol baits may be cost-effective. Recent advances in trap designs for coniferophagous woodborers (de Groot & Nott 2001;Morewood et al 2002a) should also improve the efficacy of mass trapping programs.…”

“…Similarly, M. scutellatus responded equally to traps of various designs baited with host volatiles early in the flight season, when maturation feeding occurs. In the latter half of the flight season, when oviposition occurs, they were most responsive to baited traps presenting a prominent, dark silhouette, suggestive of their larval hosts (Morewood et al 2002a). The chemistry governing interactions among members of the larval insect community below the bark has yet to be investigated.…”