We report recent records of the rove beetle Quedius dilatatus (Fabricius, 1787) in Belgium. This beetle lives in nests of the European hornet Vespa crabro L., 1758 (Hymenoptera: Vespidae) and possibly profits of the recent expansion of its host. However, it seems its recent distribution is also linked to the use of recently more often used trap types, baited with an ethanol, water, glycerol and acetic acid mixture, or baited with red wine with ethanol or even white or red wine vinegar, mimicking the smell of freshly decaying wood. These methods of trapping are discussed in this paper.
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RBINS Staff Publications 2024
