Walnut Leaf Gall Mite
Walnut Leaf Gall Mite - Aceria erinea
Description
Aceria erinea is a mite that causes galls to form on the leaves and occasionally the fruits of Walnut. Large yellowish blisters appear on the upper surface of the leaves with corresponding hollows on the underside which are lined with whitish or pale brown hairs among which the mites live and feed.
Identification difficulty
Gall 
Adult 
Habitat
On Walnut.
When to see it
Whilst Walnut is in leaf.
Life History
The mites spend the winter in the buds.
UK Status
Can be fairly frequent where the host trees occur.
VC55 Status
Occasional in Leicestershire and Rutland.
Peter Smith
Leicester University Botanic Gardens
06 August 2013
galls on Walnut
Graham Calow
Sharnford, Fosse Meadows
26 July 2020
galls on Walnut
Peter Smith
Leicester University Botanic Gardens
06 August 2013
Walnut Leaf Gall Mite (Aceria erinoea)
Maggie Frankum
Wash Brook Nature Area, Knighton, Leicester
27 August 2014
upper leaf surface
David Nicholls
Shady Lane Arboretum
22 September 2016
Graham Calow
Stoney Stanton Cemetery Nock Verges
27 August 2019
galls on Walnut
Leicestershire & Rutland Map
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UK Map
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