Operation of the alula as an indicator of gear change in hoverflies

Article, Other literature type English OPEN
Walker, Simon M.; Thomas, Adrian L. R.; Taylor, Graham K.;

The alula is a hinged flap found at the base of the wings of most brachyceran Diptera. The alula accounts for up to 10 per cent of the total wing area in hoverflies (Syrphidae), and its hinged arrangement allows the wings to be swept back over the thorax and abdomen at ... View more
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