Colomerus vitis (Pagenstecher, 1857) A species of the family Eriophyidae. These mites are microscopic in size. The one in this photograph measures only 43 ?m (1/2 millimetre) and is therefore completely invisible without optical equipment such as a microscope. The Colomier mites live on the underside of the vine leaves where their bites cause a reaction of the plant in the form of blisters due to the formation of numerous filaments. The mites live in the middle of these filaments and are almost invisible. This disease is called grapevine erinosis.

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達志影像

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