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The nut gall-mite (Eriophyes avellanae, Nal.) is one of the commonest species of gall-mites that occurs in this country, and it may be found infesting the buds of hazel (Corylus avellana) in almost any hedgerow and copse where this plant grows. The species is found also in America and in Continental Europe. Its life-cycle is very similar to that of the black currant gall-mite, E. ribis (Westw.) Nal.
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Á. M. Massee (1930) studied this question.
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