Aceria thomasi

Description

A rounded rosette gall formed from leaves and buds at the shoot-tips of wild Thyme (Thymus polytrichus).  The mites live inside the long dense white hairs on and inside the gall.

Identification difficulty
Recording advice

Photograph the gall in situ; ensure you have noted the host-plant and included this in the photos

Habitat

Grassland (limestone grassland in VC55)

UK Status

Widespread, common (Redfern & Shirley 2023)

VC55 Status

Rare.  Up to 2025, it has only been recorded from Ketton and Bloody Oaks quarries 

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Species group:
Mites, Ticks & Pseudoscorpions
Kingdom:
Order:
Family:
Records on NatureSpot:
1
First record:
09/07/2025 (Timms, Sue)
Last record:
09/07/2025 (Timms, Sue)

Total records by month

% of records within its species group

10km squares with records

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