oa African Entomology - Monitoring the brown wattle mirid, Lygidolon laevigalum Reuter (Hemiptera: Miridae)
Sticky traps are the most practical and economical means of monitoring the brown wattle mirid, Lygidolon laevigatum Reuter. Of three types of sticky traps that were compared, a cylindrical plastic trap made from a 2 I plastic bottle was the least expensive but effective. Experiments with different colours and hues showed that the wattle mirid was positively phototaxic to yellow and its various hues. Paint was the most economical and practical solution to colouring the plastic trap. The most effective trap height was 2 m above the ground. Eight adults per trap was the economic threshold level. It is recommended that when this threshold is reached, sweep-netting of trees should be carried out to substantiate the threshold. If sweep-net samples contain six or more adult wattle mirids per tree, then control should be implemented.
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