The hoverfly Callicerct rufa is considered a nationally scarce species of Diptera (Syrphidae) and is most frequently found in Scotland in Caledonian Pinewoods of Scots Pine Pinus sylvestris, where there are natural wet rot-holes for breeding. There have also been rare English records from, for example, Shropshire, Clumber Park in Notts, Hereford and East Anglia.
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