Solvin Zankl / Gall wasp (Cynips quercusfolii) emerging from the oak gall. Germany, October.

Duncan Mcewan / Silk button spangle galls on Oak casued by Wasp (Neuroterus albipes). Scotland, UK, Europe

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to Pear (Pyrus sp) leaves. Berkshire, England, UK. May.

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to Pear (Pyrus sp) leaves and young fruit. Berkshire, England, UK. May.

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to young Pear (Pyrus sp) fruit. Berkshire, England, UK. June.

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to Pear (Pyrus sp) leaves. Berkshire, England, UK. June.

Nigel Cattlin / Corky brown damage to Pear (Pyrus communis) fruit possibly caused by early Eriophyid (Eriophyidae) blister mite infestation. Berkshire, England, UK. September.

Colin Varndell / Knopper gall of the gall wasp (Andricus quercuscalicis) Dorset, England, UK, September.

Steve Downer / Newly emerged Gall wasp (Biorhiza pallida) preening, UK, June.

Steve Downer / Newly emerged Gall wasp (Biorhiza pallida) grooming, UK, June.

Steve Downer / Gall wasp (Biorhiza pallida) emerging from a gall on an Oak (Quercus) tree, UK, June.

Will Watson / Nettle clustercup rust fungus (Puccinia urticata) induced gall on Common nettle (Urtica dioica), Westhope Common, Herefordshire, England, UK, May.