Aceria brachytarsus
Small pouches on the leaves of walnuts, rounded on top and with a conical projection and opening below
host 
Photograph both upper and lower leaf surface; state host plant in your comments
Walnut trees
Rare - first discovered in Cambridge in 2021
The Leicester record of 2026 is the first for VC55
Peter Smith
Leicester, Wash Brook Nature Reserve
22 June 2026
Leaf edge gall: side view
on Walnut
Peter Smith
Leicester, Wash Brook Nature Reserve
20 June 2026
Upper surface
Peter Smith
Leicester, Wash Brook Nature Reserve
20 June 2026
Lower surface
Peter Smith
Leicester, Wash Brook Nature Reserve
22 June 2026
Leaf edge gall: upper surface
Peter Smith
Leicester, Wash Brook Nature Reserve
22 June 2026
Mid-leaf gall: upper surface
Peter Smith
Leicester, Wash Brook Nature Reserve
22 June 2026
Mid-leaf gall: lower surface
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020
UK Map
Species profile
- Species group:
- acarine (Acari)
- Kingdom:
- Animalia
- Order:
- Trombidiformes
- Family:
- Eriophyidae
- Records on NatureSpot:
- 2
- First record:
- 20/06/2026 (Smith, Peter)
- Last record:
- 22/06/2026 (Smith, Peter)
Total records by month
% of records within its species group
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