. Insect pests of farm, garden and orchard . oung trees in the nursery and on 3oung orchard trees, thisinjury to the foliage is sometim(\s so severe as to kill or severelycheck the growth. Both winged and wingless aphides are fountl on the foliage,]jut only the wingless forms occur on the roots. Both forms areabout one-twelfth inch long and shining deep brown or blackin color when mature. The partly grown aphides, which formthe larger part of most colonies, are reddish-yellow or

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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915