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Eriosoma lanigerum, the woolly apple aphid, woolly aphid or American blight, [1] is an aphid in the superfamily Aphidoidea in the order Hemiptera. It is a true bug and sucks sap from plants. It is a true bug and sucks sap from plants.
The woolly apple aphid, Eriosoma lanigerum is a widespread pest of fruit trees, feeding principally on apple, but also, pears, hawthorn, ash, alders, elms and oaks. Gall making species include Melaphis rhois and Pemphigus spp. Further minor damage can be caused by the honeydew that woolly aphids
Woolly Aphids on Apple tree branch. Many aphid species are monophagous (that is, they feed on only one plant species). Others, like the green peach aphid, feed on hundreds of plant species across many families. About 10% of species feed on different plants at different times of the year. [32]
Aphelinus mali is a parasitoid wasp that exploits the woolly apple aphid (Eriosoma lanigerum), a pest of apple trees. [1] It is native to the northeastern United States but has been introduced to other parts of the world as a biological pest control agent.
Eriosoma americanum (C.V.Riley, 1879) [1] — woolly elm aphid; Eriosoma anncharlotteae Danielsson, 1979; Eriosoma flavum Jancke, 1930; Eriosoma grossulariae (Schüle, 1887) Eriosoma lanigerum (Hausemann, 1802) — woolly apple aphid; Eriosoma lanuginosum (Hartig, 1839) Eriosoma patchiae (Börner & Blunck, 1916)
When a cyclical parthenogenesis occurs, aphids reproduce sexually in the autumn and produce an overwintering egg, deposited on buds and bark crevices of the host plant. In spring the newly hatched nymphs develop in about two to three weeks and at least three molts to wingless, 2–3 mm large Fundatrix.
An example spangram with corresponding theme words: PEAR, FRUIT, BANANA, APPLE, etc. Need a hint? Find non-theme words to get hints. For every 3 non-theme words you find, you earn a hint.
Five species of aphids commonly attack apples: apple grain aphid, rosy apple aphid, apple aphid, spirea aphid, and the woolly apple aphid. The aphid species can be identified by color, time of year, and by differences in the cornicles (small paired projections from their rear). [ 59 ]