Intercept flight trap designs to capture Scolytinae, Platypodinae, Cerambycidae, Bostrichidae and Cleridae

Abstract

Beetles Scolytinae and Platypodinae (Curculionidae), Cerambycidae e Bostrichidae (Coleoptera) present a high diversity, and they can, in many cases, inflict a high damage to the host plants they attack. The beetles number of these species are monitored with ethanol-baited flight intercept traps, and its design affects the efficiency of collect of the species. The aim of this study was to analyze the influence of the number of vanes and openings in flight intercept traps traditionally used in Brazil, made from two-liter soda bottles, baited with 96% ethanol to collect these beetles and your predator Cleridae (Coleoptera). The traps had one, three or four vanes, presence/absence of a central vane hole; and presence/absence of an upper opening at its top. The number of vanes influenced in the capture of these beetles, because the traps with three vanes with absence of both holes collected the most of these beetles. The central and upper hole did not influence the collect them in this study, perhaps due to unfavorable climate conditions for the flight of these beetles and to disperse the ethanol. The efficiency of the monitoring depends on a set of factors. A single factor, such as the highest ethanol release rate is not enough for highest beetle catches.