The book The Pageant of Nature volume 2 was written by author P Chalmers Peter Chalmers Mitchell Here you can read free online of The Pageant of Nature volume 2 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Pageant of Nature volume 2 a good or bad book?
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) 21. -AN ENEMY OF THE APHIS LACE-WING FLY By K. G. BLAIR, B. Sc. , F. E. S. With photographs by Hugh Main, B. Sc. , F. E. S. THE THE lace-wing fly is an insect that deserves to be widely recognized as the friend of man, for, like the hover fly and the ladybird, it is an inveterate foe of the aphides or greenfly tribe, the most destructive insect pests with which horti- culture and agriculture in this country have to contend. It is an insect of moderate size but slender build, the delicate body... of a bright green colour, frequently with a yellow stripe down the back, and sometimes more or less marked with black for it must be borne in mind that under the one popular name lace-wing fly, we have in this country about a dozen distinct species differing from one another in minute points of structure, in colour, and to a considerable extent in their habits. The fly is furnished with two pairs of ample wings from the delicate net or lace-like structure of which is derived its name. These wings consist of a clear transparent membrane supported by a system of nervures running longitudinally from the base, and occasionally emitting branches which run obliquely to them, these being connected by a few short cross veins, thus producing the net-like mesh.
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