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" Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably also other kinds of trees, are frequented and injured by them. "
The American Naturalist - Сторінка 534
1873
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A Report on the Insects of Massachusetts, Injurious to Vegetation

Thaddeus William Harris, Massachusetts. Zoological and Botanical Survey - 1841 - 484 стор.
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilight they come forth from their retreats, and fly about...of trees, the tender leaves of which they devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably...
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The Magazine of Horticulture, Botany, and All Useful Discoveries and ..., Том 9

1843 - 498 стор.
...the middle of May, and continue generally till the 20th of June. In the morning and evening twilight they come forth from their retreats, and fly about with a humming and nestling sound among the branches of trees, the tender leaves of which they devour." " Pear trees are...
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The Farmer's Encyclopædia, and Dictionary of Rural Affairs ..., Том 1

Cuthbert William Johnson - 1844 - 1210 стор.
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilights they come forth from their retreats, and fly about with a humming чА rustling sound among the branches of 'fees, the tender leaves of which they devour. Pear-trees...
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A Treatise on Some of the Insects of New England which are Injurious to ...

Thaddeus William Harris - 1852 - 536 стор.
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilight they come forth from their retreats, and fly about...of trees, the tender leaves of which they devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably...
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A Treatise on Some of the Insects Injurious to Vegetation

Thaddeus William Harris - 1862 - 700 стор.
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilight they come forth from their retreats, and fly about...of trees, the tender leaves of which they devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably...
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The Farmer's and Planter's Encyclopaedia of Rural Affairs: Embracing All the ...

Cuthbert William Johnson - 1869 - 1296 стор.
...middle of May, and continue generally till the twentieth of June. In the morning and evening twilights they come forth from their retreats, and fly about...the branches of trees, the tender leaves of which the v devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak,...
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Annual Report of the Secretary of the Board of Agriculture, Том 20

Massachusetts. State Board of Agriculture - 1873 - 624 стор.
...middle of May, and continues generally till the twentieth of June. "In the morning and evening twilight they come forth from their retreats, and fly about...of trees, the tender leaves of which they devour. Pear-trees are particularly subject to their attacks, but the elm, hickory, poplar, oak, and probably...
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The Canadian Entomologist, Томи 10 – 12

1878 - 798 стор.
...of concealing themselves. At dusk they issue from their hiding places and fly about with a buzzing sound among the branches of trees, the tender leaves of which they devour ; the Pear tree, the Oak, Poplar, Hickory, Silver Abele and Sweet Gum all suffer more or less from...
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The Canadian Entomologist, Томи 11 – 12

1879 - 530 стор.
...of concealing themselves. At dusk they issue from their hiding places and fly about with a buzzing sound among the branches of trees, the tender leaves of which they devour ; the Pear tree, the Oak, Poplar, Hickory, Silver Abele and Sweet Gum. all suffer more or less from...
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Insects Injurious to Fruits

William Saunders - 1883 - 448 стор.
...of concealing themselves. At dusk they issue from dieir hiding-places and fly about with a buzzing sound among the branches of trees, the tender leaves of which they devour. The pear, oak, poplar, hickory, sifter abele, and sweet-gum all suffer more or less from their attacks....
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