Acta Phytopathologica et Entomologica Hungarica (2002) 37, 163-168

F. Tóth, L. Horváth, J. Komáromi, J. Kiss and E. Széll (2002)
Field data on the presence of spiders preying on western corn rootworm (Diabrotica virgifera virgifera LeConte) in Szeged Region, Hungary
Acta Phytopathologica et Entomologica Hungarica 37 (1-3), 163-168
Abstract: The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, is a new pest of corn in Europe. Future management may include the use of natural enemies. Our study focused on the determination of density and species composition of spiders in corn fields, as well as in the adjacent corn field margins, during the peak flight period of WCR adults. An additional objective was to test different sampling methods, used for spider collecting, in corn fields and in adjacent corn field margins. The field study was conducted in July and August, 1999, in experimental corn plots, as well as in the adjacent field margins, owned by the Cereal Research Institute, Szeged, in Southern Hungary. Spiders were collected by individual plant search and by sweep nets. Number of spiders /m² was significantly higher, whereas /m³ was significantly lower in the corn plots compared to the adjacent field margins. Remnants of WCR adults were found in theridiid [Theridion impressum L. Koch, T. pictum (Walckenaer), Enoplognatha latimana Hippa and Oksala] and agelenid (Agelena sp.) webs. We observed that individuals of both families were able to kill 1-5 adult beetles within 90 minutes.
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Link to article at publishers website
Database assignments for author(s): Jozsef Kiss

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Diabrotica virgifera	Maize/corn (Zea mays)	Hungary
Phylloneta impressa (predator)	Diabrotica virgifera	Maize/corn (Zea mays)	Hungary
Theridion pictum (predator)	Diabrotica virgifera	Maize/corn (Zea mays)	Hungary
Enoplognatha latimana (predator)	Diabrotica virgifera	Maize/corn (Zea mays)	Hungary