Acta Phytopathologica et Entomologica Hungarica
Volume/Issue:
Volume 49: Issue 2
KLP+ (“hat”) trap with semiochemical lures suitable for trapping two Diabrotica spp. exotic to Europe
Authors: M. Tóth 1 , P. Viana 2 , E. Vilela 3 , M. Domingue 4 , T. Baker 4 and J. Vuts 1
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  • 1 HAS Plant Protection Institute, CAR P. O. Box 102 H-1525 Budapest Hungary
  • 2 EMBRAPA Sete Lagoas MG Rodovia, MG-424, Km 45 CEP 35701-970 Brazil
  • 3 Universidade Federal de Vicosa Department of Entomology Vicosa MG 36570-000 Brazil
  • 4 The Pennsylvania State University Department of Entomology University Park PA 16802 USA
  • 5 Rothamsted Research Department of Biological Chemistry and Crop Protection Harpenden, Hertfordshire AL5 2JQ UK
DOI:
https://doi.org/10.1556/APhyt.49.2014.2.7
Page Count:
211–221
Publication Date:
01 Dec 2014
Online Publication Date:
04 Dec 2014
Article Category:
Research Article
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The KLP+ (“hat”) trap baited with pheromone or floral lures is a highly efficient non-sticky trap for the western corn rootworm, Diabrotica v. virgifera. We tested the suitability of this trap design for the related species, D. speciosa and D. barberi, baited with their respective lures. Both species are exotic to Europe: the former inhabits South America, and the latter occurs in some parts of North America.In screening tests performed in Brazil, several synthetic floral compounds and their combinations were found to be attractive to D. speciosa. However, the greatest effect was recorded for the previously described attractant 1,4-dimethoxybenzene. When the most active compounds in the preliminary test, 2-phenylethanol, methyl anthranilate, eugenol or benzaldehyde were added to 1,4-dimethoxybenzene, no synergistic effects were observed. When 1,4-dimethoxybenzene was formulated in three types of polyethylene (PE) dispensers in KLP+ traps, PE bag dispensers were superior to two types of PE vial dispenser, and caught hundreds of D. speciosa. Unbaited traps caught only negligible numbers. There was an interesting non-target effect. KLP+ traps with 1,4-dimethoxybenzene caught large numbers of the cornsilk fly, Euxesta eluta, which is known as a maize pest.For D. barberi, both a pheromone and a potent floral lure are already known. In tests with KLP+ traps, we found that the pheromone and floral lures can be applied together in the same trap to maximize both male and female catches.In conclusion, for early detection programs in Europe, the application of KLP+ traps baited with 1,4-dimethoxybenzene in PE bag dispensers could be recommended for D. speciosa, and KLP+ traps with dual (pheromone and floral) lures for D. barberi. In the case of D. barberi, one should note that the lures also show some attraction for D. v. virgifera, and the ratio of D. barberi vs. D. v. virgifera in the catch will be predominantly determined by the relative population densities at the given site.

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Cover Acta Phytopathologica et Entomologica Hungarica
Acta Phytopathologica et Entomologica Hungarica
Print ISSN:
0238-1249
Online ISSN:
1588-2691
Keywords:
Diabrotica speciosa; D. barberi; Euxesta eluta; semiochemical trapping; detection