Phytoptus avellanae is a gall mite species that induces big bud galls of up to 10 millimetres across, sometimes slightly open, on the buds of Hazel (Corylus avellana) and on Filbert (Corylus maxima).
Galls may occur where the host species are found.
Galls may be seen when the host species are in leaf.
Widespread in Britain though not well recorded.
Status in Leicestershire and Rutland not known
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015