The larva of the midge Rabdophaga rosaria causes a conspicuous rosette shaped gall to form in the terminal bud of various Willows. Often more than 20 mm across the gall has a central chamber which contains a pink or red larva. The gall is seen more frequently than the adult midge.
On various Willow species including Salix alba and Salix fragilis.
Late summer and early autumn.
Widespread and probably fairly frequent in Britain, but under recorded.
Seems to be becoming increasingly frequent in Leicestershire and Rutland. The gall recorded at Melton Country Park on 10th September 2014 is believed to be the first record for VC55.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015