. Economic entomology for the . Icerya purchasi, female. Fig. 82. selves to surroundings, and find other food to their likino^ ; but while they have been use- ful as against the Ice?ya, and may have entirely destroyed it, we cannot hope that they will be equally successful in coping with our native insects, who have long since adapted themselves to their surround- ings in such a way as to make it unlikely that any intro- duced species will be effectual in seriously lessening their numbers. Insects of this char- acter are susceptible of treat- ment with the kerosene emul- sion, althoug
. Economic entomology for the . Icerya purchasi, female. Fig. 82. selves to surroundings, and find other food to their likino^ ; but while they have been use- ful as against the Ice?ya, and may have entirely destroyed it, we cannot hope that they will be equally successful in coping with our native insects, who have long since adapted themselves to their surround- ings in such a way as to make it unlikely that any intro- duced species will be effectual in seriously lessening their numbers. Insects of this char- acter are susceptible of treat- ment with the kerosene emul- sion, although, where they occur in such numbers as did the Icerya in California, this
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublishernp, bookyear1896
