n African Entomology - The establishment of (Hymenoptera : Braconidae) introduced into South Africa for the biological control of (Coleoptera : Scolytidae), with additional notes on sp. nr. : short communication




The European bark beetle, (Wollaston) (Coleoptera: Scolytidae), although widely distributed within Europe, southern Russia (Schwenke 1974) and North Africa (Chararas 1964), is essentially a Mediterranean species (Mendel 1987). Within its native range is regarded as a minor pest, colonizing dead and dying trees (Schwenke 1974), and is able to kill moribund or stressed trees (Chararas & M'Sadda 1973). The males produce an aggregation pheromone that attracts beetles of both sexes (Giesen 1984) to an ephemeral habitat (such as a wind-blown tree), which is fully utilized. The beetles and their larvae feed on the cambium and phloem and so cause underbark girdling of the tree.


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