Article (Scientific journals)
Biogeographical Observations On Four Scolytids (Coleoptera, Scolytidae) And One Lymexylonid (Coleoptera, Lymexylonidae) In Wallonia (Southern Belgium)
Henin, Jm.; Huart, O.; Rondeux, Jacques
2003In Belgian Journal of Zoology, 133 (2), p. 175-180
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Keywords :
Scolytidae; Trypodendron domesticum; T. signatum; Xyleborus dispar; Taphrorychus bicolor; Lymexylonidae; Hylecoetus dermestoides; range; Wallonia; beech disease; monitoring
Abstract :
[en] Following a very sudden, early and deep frost at the end of autumn 1998, the availability of weakened trees (mainly beech trees) reached very high levels in Southern Belgium in the spring of 1999. Consequently, the ambrosia beetles Trypodendron domesticum L. and T. signatum (Fabricius) (Coleoptera, Scolytidae) initiated outbreaks and, in 2000 and 2001, they heavily contributed to the depreciation of nearly 1,600,000 m3 of stem volume (to upper limit girth of 22 cm) in the natural regions of “Ardenne” and “Belgian Lorraine”. Because of the lack of biogeographical data on both insects, of their conspicuous aggressiveness towards apparently healthy trees and of the economic importance of the beech wood chain in Belgium, a large-scale survey was undertaken in 2001, in order to outline the range of both ambrosia beetles in Wallonia. To this effect, a network of 172 traps baited with ethanol was set up, attempting to cover the Walloon beech forest as representatively as possible. Two other scolytids and one lymexylonid were also frequently caught, which made it possible to outline their regional distribution too. Although the damage was limited to the Ardenne and Belgian Lorraine, T. domesticum and T. signatum are widespread throughout Wallonia. We discuss these results, their long-term validity, the secondary pest status of these insects and the need for a permanent monitoring of the major forest pest species and diseases.
Disciplines :
Entomology & pest control
Author, co-author :
Henin, Jm.
Huart, O.
Rondeux, Jacques ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Language :
Title :
Biogeographical Observations On Four Scolytids (Coleoptera, Scolytidae) And One Lymexylonid (Coleoptera, Lymexylonidae) In Wallonia (Southern Belgium)
Publication date :
Journal title :
Belgian Journal of Zoology
Publisher :
Koninklijke Belgische Vereniging voor Dierkunde, Belgium
Volume :
Issue :
Pages :
Peer reviewed :
Peer Reviewed verified by ORBi
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