Nature biographies; the lives of some every-day butterflies; moths; grasshoppers and flies . ough^ spraying with arsenate of lead or other forms of arsenical poisons. An interesting exhibition of popularignorance occurred during a recentoutbreak of these caterpillars whenmany owners of shade trees in a NewEngland city applied bands of varioussorts to the trunks of the trees to pre-vent the injury. Presumably this wasdone on the theory that as bands aresuccessfully employed against canker-worms, they are equally good againstother caterpillars. In the case of canker-worms, how-ever, the female m
Nature biographies; the lives of some every-day butterflies; moths; grasshoppers and flies . ough^ spraying with arsenate of lead or other forms of arsenical poisons. An interesting exhibition of popularignorance occurred during a recentoutbreak of these caterpillars whenmany owners of shade trees in a NewEngland city applied bands of varioussorts to the trunks of the trees to pre-vent the injury. Presumably this wasdone on the theory that as bands aresuccessfully employed against canker-worms, they are equally good againstother caterpillars. In the case of canker-worms, how-ever, the female moth w^hich lays the eggs is wingless,so that the bands prevent her from ascending the with the spin)^ elm caterpillar the parent insectthat lays the eggs is a butterfly which can easily fly tothe tops of the tallest trees. The eggs are deposited onthe twigs by these butterflies, and the caterpillars remainin the close neighbourhood of the place where they hatchuntil they are full grown. Consequently, any bandingof the tree is a waste of energy so far as this insect Empty Chrysalis.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1901
