. Elementary principles of agriculture; a text book for the common schools. r nest with theyounger stages of other insects as food for the youngwasps. The adults prefer nectar and pollen for them-selves, however. The mud-dauber fills the mud-cells withthe bodies of young spiders, flies, etc., and before seahngup the hole, deposits an egg. The food for the larva isthere ready for it when it is hatched. Wasps are said tocatch the biting flies that worry stock, and, especially,the larvae of the boll-worm. Wasps nests should not bedestroyed except, possibly, in orchards. \176j Useful Insects 177 2
. Elementary principles of agriculture; a text book for the common schools. r nest with theyounger stages of other insects as food for the youngwasps. The adults prefer nectar and pollen for them-selves, however. The mud-dauber fills the mud-cells withthe bodies of young spiders, flies, etc., and before seahngup the hole, deposits an egg. The food for the larva isthere ready for it when it is hatched. Wasps are said tocatch the biting flies that worry stock, and, especially,the larvae of the boll-worm. Wasps nests should not bedestroyed except, possibly, in orchards. \176j Useful Insects 177 246. Ichneumon Flies, of which there are manykinds, are somewhat related to the bees and adult often feeds on nectar. The usefulness of thisclass of insects is due to the fact that the young areparasites. They do not secure their prey by of catching the insects and carrying them to theyoung larvae, their eggs are deposited in or on the bodiesof their victims, and there grow into grubs. The grubsmature in or on the body of the hosts. The eggs of the.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
