File:Indian forest insects of economic importance. Coleoptera (1914) (14596483177).jpg

Identifier: indianforestinse00stebuoft (find matches)
Title: Indian forest insects of economic importance. Coleoptera
Year: 1914 (1910s)
Authors: Stebbing, Edward Percy, 1870-1960
Subjects: Beetles Forest insects -- India Trees -- Diseases and pests
Publisher: London Eyre & Spottiswoode
Contributing Library: Earth Sciences - University of Toronto
Digitizing Sponsor: MSN

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t and sapwood and only issues to feed onthe outer soft bark at night-time. He can, however, be traced back to theopening leading to his shelter if the silken tunnel is pulled off the outer bark.A thick patch of tar placed over the opening and jammed into it may killhim. In the case of broad-leaved trees, such as the poplar, an outflow ofsap from the hole will be seen on the bark (pi. vii). Another plan is to paint the bark with a mixture of kerosene and tar andset fire to the area. This will kill all the insects in the bast and outer sap-wood. Only the area affected will be burnt, and the burnt portion shouldthen be thickly coated with tar, especially at the edges where it meets theunburnt bark. This mixture was tried by Captain H. S. James on thechilgoza-trees in the Zhob forests, which were infested with bark-boringbeetles, after he had experimented with several other materials, and foundto give excellent results. It would probably only be applicable to thin-barked trees. PLATK VII.
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A poplar-tree infested by the .^riibs of . Eolesthes .«ir/<t. Solsk. The heav; by the attack is seen dripping <l\\n ihe bark. Quetta, 1905. ON METHODS OF PREVENTING INSECT ATTACK 55 Finally, to prevent pests such as caterpillars moving from tree to treeup or down the trunk, bands composed of a thick greasy material or of asticky material such as molasses should be painted on the tree, the bandbeing at least eight to twelve inches deep. These bands can be utilizedefficiently against another pest in the case of mango-trees. The Mono-phlcbus scale insect which sucks the sap from the leaves and later from thetwigs of the tree, often thereby spoiling the fruit crop, when intent on egg-laying crawls down the tree-trunk to oviposit in the soil below. It does notappear to oviposit on the trees. Therefore, if in a severe attack broadsticky bands are painted on the trunks about four to five feet above theground, the insects will be caught on these as they crawl down the tree, andanother

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