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| Rowan ,mountain ash (Sorbus aucuparia) |
Phyllocoptes sorbeus gall
Phyllocoptes sorbeus is a mite which causes galls to form on the leaves of Rowan (Mountain Ash). The galls are seen more often than the mites that cause them. There is a dense felt-like erineum (or tufts/carpet of hairs), on under- or upper-side of the leaf, in which the mites live. The erineum is whitish at first, then yellowish or pinkish
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