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Selective focus on Red Nail Gall Mite, Eriophyes Tiliae

Butterfly eggs on leaf, tropical species

A grape leaf showing the galls that are formed during a phylloxera infestation, is a pest of commercial grapevines worldwide.

The gall wasp (Andricus quercuscalicis) lays its eggs inside the acorn itself, causing it to mutate. When the infestation first appeared some thought it might wipe out England's oak trees. However, although these galls affect individual acorns and their cups, the net effect is not disastrous. Knopper galls were first recorded in the UK in the 1960s. They have spread rapidly across the country, until now they are one of the commonest oak galls across all England. The name 'pedunculate oak' refers to the situation of the acorns, which arise from long stems (peduncles), as distinguished from the 'sessile oak', where the acorns sit directly on the oak twigs.

Aphid colony killed by parasitoids, parasitoid wasps.

Diffuse large B-cell lymphoma, or DLBCL, is a cancer that starts in white blood cells called lymphocytes.

Grape aphid Phylloxera on green vine leaves in the vineyard. Phylloxera vastatrix common disease

Butterflyeggs, Great White Wagtail, Pieris, brassicae

$Green leaves of longan infected with diseases and bacteria\nFungal disease powdery mildew on a longan leaf.$

Apple tree branch with green leaves affected by a fungal disease rust. A branch of a rusted apple tree. Pest control and protection of gardens from diseases.

$Galls on white snakeroot (Ageratina altissima) in late summer. They look like a natural part of this wildflower, such as fruits, but inside a tiny insect called a stem gall midge is developing. This midge, Schizomyia eupatoriflorae, specializes in parasitizing this plant, which is poisonous.\n\nAccording to Wikipedia, Abe Lincoln's mom may have died from milk sickness passed on by cattle that ate white snakeroot, which is native to eastern and central North America. Bees and other pollinators love it. Photo taken in Connecticut.$

Cabbage Whitefly (Aleyrodes proletella) and green peach aphid or the peach-potato aphid (Myzus persicae) on the underside of the rapeseed leaf.

A single fruit capsule of a Coliguay Tree (Colliguaja odorifera) in late winter in central Chile, near the capital Santiago. The developing fruit has been invaded by the tiny Chalcid wasp, Aprostocetus colliguayae, that has caused a swollen gall to develop and protect the growing wasp larvae, effectively sterilising the fruit capsule of the Coliguay plant.

Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.

oak apple gall from an Oregon Oak that was induced by the California gallfly Andricus californicus, Andricus quercuscalifornicus.

White fly infestation on a plum tree leaf.

diseased leaves of plants in the garden with holes that have been damaged by the Spanish slug

Closeup seeds after blooming time of white Eucalyptus flowers, background with copy space, full frame horizontal composition

A close-up of a fungal rose disease black spot with infected yellow and green leaves what weakens the rose bush, and needs treatment.

Leaves damaged by caterpillars and harmful bugs

grape leaves disease infected vineyard grape plant disease

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Oak_leaf_gall;_Keys_(Desert_Queen)_Ranch.jpg

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Galle Pediaspis aceris sur feuille Acer pseudoplatanus.jpg

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Alfred_Berlepsch,_friend_of_Axel_and_Mary_Gallén-Kallela,_at_Heiligenblüt_in_Austria,_1928..jpg

Mary_Gallén,_probably_posing_for_Lemminkäinen´s_Mother_at_home_Kalela,_in_Ruovesi,_1897..jpg

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Hunting-themed_portrait_of_friends_Louis_Sparre_and_Axel_Gallén,_taken_in_Daniel_Nyblin´s_photography_studio_in_Helsinki,_1890;_print_1_of_the_photograph..jpg

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Mary_Gallén_skiing_in_Malmi,_Helsinki,_1890;_print_1_of_the_photograph..jpg

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