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Libros Libros 11 - 20 de 28 sobre ... the passage becomes clogged and the burrow more or less filled with the coarse...
" ... the passage becomes clogged and the burrow more or less filled with the coarse and fibrous fragments of wood, to get rid of which the grubs are often obliged to open new holes through the bark. The seat of their operations is known by the oozing of... "
The Canadian Entomologist - Página 138
1878
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Bulletin, Tema 7

1881
...bark. The seat of their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunk and limbs will become disfigured and weakened by large porous tumors, cansed by the efforts of...
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Bulletin, Volúmenes353-377

1914
...the tree. The seat of their operations is known by the oozing of the sap and the dropping of sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunks and the limbs become disfigured by large porous tumors. The grubs attain their full size by the twentieth...
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Fifth Report of the United States Entomological Commission: Being a Revised ...

United States Entomological Commission, Alpheus Spring Packard - 1890 - 957 páginas
...bark. The seat of their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunk and limbs will become disfigured and weakened by large poron» tumors, caused by the efforts...
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Report of the United States Entomological ..., Volumen5,Partes1886-1890

United States Entomological Commission - 1890
...seat of their operations is known by the ooziag of the sap and the dropping of the sawdust from th« holes. The bark around the part attacked begins to swell, and in a few years the trunk and limbs will become disfigured and weakened by large porona tumors, caused by the efforts of...
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Fifth Report of the United States Entomological Commission: Being a Revised ...

United States Entomological Commission, Alpheus Spring Packard - 1890 - 957 páginas
...their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. Tbe bark around the part attacked begins to swell, and in a few years the trunk and limbs will become disfigured and weakened by large porous tumors, caused by the efforts of...
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Agriculture of Pennsylvania

1891
...is known bv the oozing of the sap, and the dropping of the sawdust from the holes. The bark aroiind the part attacked begins to swell, and in a few years the trunk and limbs become disfigured and weakened by large porous tumors, caused by the efforts of the...
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Annual Report of the Pennsylvania Department of Agriculture, Volumen1

Pennsylvania. Department of Agriculture - 1897
...entrance. The seat of their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunk and limbs will become disfig ured and weakened by large porous tumors, caused by the effort of...
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Annual Report of the Pennsylvania Department of Agriculture, Parte2

Pennsylvania. Department of Agriculture - 1898
...holes. The .bark around the part attacked begins to swell, and in a few years the trunk and liirbs will become disfigured and weakened by large porous...trees to repair the injuries they have suffered." The beetle is about three-fourths of an inch in length, velvet black and ornamented with yellow transverse...
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Report

Pennsylvania. Department of Forests and Waters - 1898
...bark. The seat of their operations is known by the oozing of the sap and the droppings of the sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunk and limbs will become disfigured and weakened by large porous tumors, caused by the efforts of...
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Report

Minnesota. State Entomologist - 1908
...bark. The seat of their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked...the trees to repair the injuries they have suffered. According to the observations of Gen. HAS Dearborn, who has given an excellent account of this insect,...
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