Aceria ilicis

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Aceria ilicis

Postby SteveMcBill on Sun Nov 12, 2017 11:15 am

Aceria ilicis:

On Friday (10/11/2017) I found the dark brown erinea of the Eriophyid mite (Aceria ilicis) in profusion on the underside of leaves of an Evergreen Oak (Quercus ilex) in Calderstones Park, Liverpool, Merseyside. Only one tree had the infestation and none of the other Evergreen Oaks checked showed any signs whatsoever.

Mites were visible in their thousands on each leaf under the stereo microscope (approx 45x).

It would appear that NOW is the time to check Evergreen Oaks (Quercus ilex) in Cheshire to see if the mite is present across the County (there is certainly one worth checking by the pond at Reaseheath, Nantwich). Currently the NBN Atlas map only shows records for Norfolk, Suffolk, Cambridgeshire and the Isle of Wight.

Good hunting everyone.

Steve

SteveMcBill
 
Posts: 798
Joined: Thu Jul 31, 2008 9:15 am
Location: Runcorn, Cheshire

Re: Aceria ilicis

Postby SteveMcBill on Wed Nov 15, 2017 8:30 pm

Below are photos of the Aceria ilicis erinea on the Evergreen Oak (Quercus ilex) leaves.

Steve

Attachments
aceria ilicis - blisters on topside of quercus ilex leaf.jpg
Blisters on the topside of an Evergreen Oak (Quercus ilex) leaf caused by the Eriophyid mite (Aceria ilicis) creating erinea on the underside of the leaf
aceria ilicis erinea on quercus ilex leaf - 1.jpg
Erinea caused by the Eriophyid mite (Aceria ilicis) on the underside of an Evergreen Oak (Quercus ilex) leaf
aceria ilicis erinea on underside of quercus ilex leaf - 2.jpg
Erinea caused by the Eriophyid mite (Aceria ilicis) on the underside of an Evergreen Oak (Quercus ilex) leaf
SteveMcBill
 
Posts: 798
Joined: Thu Jul 31, 2008 9:15 am
Location: Runcorn, Cheshire


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