Aceria ilicis
Aceria ilicis is a mite which causes felt galls to form on the leaves of Holm Oak. The upperside of the leaf may have a bulge about 2 to 3mm high, with a corresponding depression on the underside with a rusty brown erineum; usually several galls on a leaf; mites live amongst the hairs. The gall is seen more readily than the mite.
Gall 
Adult 
State host, and provide photo
On the leaves of Holm Oak.
All year round.
Seems to be fairly frequent but under recorded in Britain.
Little recorded but probably fairly frequent in Leicestershire and Rutland.
Maggie Frankum
University of Leicester Botanic Garden, Oadby
20 March 2014
Aceria ilicis mite gall on Holm Oak, lower leaf surface
Graham Calow
Sapcote, Leicester Road - B4114 junction
07 April 2023
galls on Evergreen Oak - upper surface
Peter Smith
Leicester, Castle Park
14 December 2022
Peter Smith
Leicester, Castle Park
14 December 2022
Graham Calow
Earl Shilton, Mill Lane Cemetery
24 October 2021
erineum on Evergreen Oak
Maggie Frankum
University of Leicester Botanic Garden, Oadby
20 March 2014
Aceria ilicis mite gall on Holm Oak, upper leaf surface
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Yellow squares = NBN records (all known data)
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Species profile
- Species group:
- Mites, Ticks & Pseudoscorpions
- Kingdom:
- Animalia
- Order:
- Trombidiformes
- Family:
- Eriophyidae
- Records on NatureSpot:
- 22
- First record:
- 09/03/2014 (Frankum, Maggie)
- Last record:
- 24/07/2023 (Nicholls, David)
Total records by month
% of records within its species group
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Latest images
Latest records
Saharima Roenisch
Shady Lane Arboretum
16 December 2017
Peter Smith
Syston churchyard
31 May 2020
Galls on holm oak
Saharima Roenisch
Shady Lane Arboretum
16 December 2017
Graham Calow
University of Leicester Botanic Garden, Oadby
15 April 2018
Graham Calow
University of Leicester Botanic Garden, Oadby
15 April 2018
