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Keywords from Image Description:
Eriophyes inangulis mite sp. induced alder vein angle gall on Alnus Alder Arnhem the Netherlands. en Eriophyes inangulis mite sp induced alder vein angle gall on Alnus Alder Bottom and top side of leaf Arnhem the Netherlands nl Eriophyes inangulis Elzennerfhoekmijt gal op Alnus Els Boven en onderkant van het blad Arnhem Nederland