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Acer Gall Mites



P_acerglmite

Acer Gall Mites

Usually appear in

Summer


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Caused By:-     Various Gall Mites

Description

Maple Bladdergall Mite (Vasates quadripedes).
There are many mites which causes galls on Maple(Acer species). These mites are not host specific and other trees are also attacked. The gall mites are microscpic and can only be seen under a microscpe, therefore their presence can only be deduced from the formation of the galls. In Summer small reddish pimples appear on the upper leaves caused by the gall mite Artacris macrorhnychus. Crimson erineum mite is usually found on silver maple and causes the formation of red fuzzy patches on the lower leaf surfaces. Red felt-like patches on the upper leaves are caused by Eriophyes eribious mites. There are many other gall forming mites that attack Acer trees. The feeding activities of the gall mites stimulate the formation of the growths or galls on the leaves. The galls are small but can be so numerous that individual leaves may curl up. Galls are not serious,but they detract from the beauty of the Acer.
Picture by Cheryl Moorehead, individual, Bugwood.org.
See also these other Galls ACORN GALL MITES, AZELAE GALL, BEECH GALL MIDGE, BLACKCURRANT GALL MIDGE, BROOM GALL MIDGE, CAMELLIA GALL, CROWN GALL, EUONOMUS GALL, FELT GALL MITES, FORSYTHIA GALL, GALLS, GALL WASP, GLEDITSIA POD GALL MIDGE, HEMEROCALLIS GALL MIDGE, HAWTHORN BUTTON TOP GALL MIDGE, KNOPPER GALL OF ACORNS, LEAFY GALL, LIME NAIL GALL MITE, OAK GALL WASP, PEAR LEAF BLISTER MITE, PINAPPLE GALL ALDELGID, PLUM GALL MIDGE, ROBINS PINCUSHION, TURNIP GALL WEEVIL, VINE ERINOSE GALL MITE, VIOLET GALL MIDGE, WILLOW BEAN GALL SAWFLY.


Control

Light infestation can be controlled by picking off the individual leaves.
Spraying with a systemic insecticide will get rid of the mites, but the galls will remain, because after initiation by the feeding activities of the mites the galls form whether the mites are present or not.
The problem is not serious so control measures are not always necessary.

P_acerglmite P_sycamglmts

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