Xylota-sylvarum

INSECT / TRUE FLY (DIPTERA) / HOVER FLIES (SYRPHIDAE)

Distribution: Widespread and common in wooded districts throughout England and Wales, but becoming scarcer further north. In Scotland it is rather local, although widespread south of the Highlands and extends northwards to Aberdeenshire (Stubbs, 1996)
Biology: The larvae feed in the soft, decaying heartwood of various trees ( Abies, *, Quercus), including deep underground in the roots. They have also been reared from decaying sawdust. It occurs in woodland and scrub, including large hedgerows. Adults are typically seen running rapidly backwards and forwards over sunlit foliage or sun bathing on stumps and fallen branches. They rarely visit flowers

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All images Peter Drury unless otherwise stated