Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: ... WOOD-BORERS. (Cerambycidw.) Certain others of the wood-boring beetles have been called "Round-headed' as distinguished from the 'Flat-headed'" borers referred to above. These round-headed borers are the larva? of the Long-horn beetles of the family Cerambycidw. They are shown in figure 315. These borers usually bore directly into the heart of the wood and there do much injury to the trees which they infest. Some of these borers are described more fully below, where the remedies are given for each. Fig. 34.--Ovipositiun and exit of the Round-headed Apple-tree Borer: n, wound where egg is deposited: a, same, with the wood split lengthwise along the line i«, r), and turned so as to show an egg in place; c, same, with the hark split on the same line and removed to the left, so as to show the manner in which the egg is eommbuly thrust to one side under the hark: d, tne egg, enlarged; e, hole of exit oi beetle; /, the sanie, us it appears from the side when split alung the line fa, e); ft, the burrow, as it appears while the insect is in the pupa st tte, and before the bark is perluraied. After Riley.) TWIG GIRDLER AND TWIG PRUNERS. Not unfrequently do we find limbs and small branches of our fruit trees lying upon the ground where they have fallen during ordinary wind storms. An examination shows that they have been cut off by something or other, but just what this something has been is a mystery to most of us. A reference to the accompanying illustrations (Figs. 35 and 30) will at once explain the mystery. Both the "Twig Girdler" and several species of the primers occur within the state where they cause more or less injury. In the case of the girdler (Fig. 35), it appears that the larva must feed upon dead wood, and that this dead wood ...
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