Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . eredsurface of leaves and bindings anddefacing them. The insect canscarcely be said to be injurious, butit is often annoying, and may bedriven out by a free use of pyre-thrum dusted in corners and crev-ices. A much more common type is thespring-tail, so named from thefact that the anal appendages consistof two short, bristle-like processes,arranged to enable the insect to leapor spring. They are normally bentunder the body, held in place by acatch-like organ until the insect
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . eredsurface of leaves and bindings anddefacing them. The insect canscarcely be said to be injurious, butit is often annoying, and may bedriven out by a free use of pyre-thrum dusted in corners and crev-ices. A much more common type is thespring-tail, so named from thefact that the anal appendages consistof two short, bristle-like processes,arranged to enable the insect to leapor spring. They are normally bentunder the body, held in place by acatch-like organ until the insect de-sires to move suddenly, when thecatch or spring is released, sendingthe insect forward a surprisingly longdistance. When excited it progresses by a series of rapid leapsof this kind, its course being decidedly erratic because no two ofthe springs are made in the same direction. Spring-tails, or Podurids, are found in moist localities,wherever decaying vegetable matter occurs. In manure bedsthey often occur in millions, and on warm days may come to thesurface in astounding numbers. I have seen a forcing bed cov-. Bristle-tail or fish-moth ; Lepisma sfi. THE INSECT WORLD. 57 ered nearly half an inch in depth by a solid mass of these littlecreatures not one-sixteenth of an inch in length. Frequently a Fig. 29.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
