A handbook of the destructive insects of Victoria, with notes on the methods to be adopted to check and extirpate them . heirappearance, is the time for spraying. If we are to besuccessful with our spraying we must depend much morethan we have hitherto done on winter and early springspraying. In a recent publication received by me from Americait is stated that in large orangeries the use of the gas-tents, as described in Part I. of this book, has nearlysuperseded the system of spraying. But in Australia, at THE LEMON LEAF AND PEEL SCALE. 91 present at least, it is to be feared that the high pr
A handbook of the destructive insects of Victoria, with notes on the methods to be adopted to check and extirpate them . heirappearance, is the time for spraying. If we are to besuccessful with our spraying we must depend much morethan we have hitherto done on winter and early springspraying. In a recent publication received by me from Americait is stated that in large orangeries the use of the gas-tents, as described in Part I. of this book, has nearlysuperseded the system of spraying. But in Australia, at THE LEMON LEAF AND PEEL SCALE. 91 present at least, it is to be feared that the high price oflabour and cost of material would likelv be against thetent system being extensively used, more especially inlarge orchards. 92 DESTRUCTIVE INSECTS OF VICTORIA: PLATE XXVII. The Apple-root Borer (Leptops Hopei.—Fahrs). Fig. 1. Branch of apple tree with perfect insects, showing female drawing edges of leaves together and depositing eggs. Natural size. 2. Larva. Slightly enlarged. 3. Pupa. Natural size. 4. Eggs on leaves, showing also silky covering to same. 5. Showing damage to apple-tree root by CCJSrUff*&anA, J)el SuTvds Jt/ffioutfj-. THE APPLE-ROOT BORER. !)3 CHAPTER XXXII. THE APPLE-ROOT BORER. (Leptops Hopei. Schwnh.) Order : Coleoptera. Family : Curculionidce. We now come to one of the most destructive andserious insect pests of the colony. The Apple-rootBorer belongs, as stated in Part I. of this Handbook,to the great family of the weevils, and is one of thelargest and best known of the Victorian species. It is,so far as I am aware, indigenous to Australia, and wasdescribed more than fifty years since by that greatentomologist and specialist in this family, than fifty species of this genus have been describedin various scientific publications as being found in theAustralian colonies. As this insect has been so recently described as adestroyer of apple trees, &c, it is considered unnecessaryto do more than simply state some additional f
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