. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Apcuiteles species.—Little mass of cocoons on leaf, replacing an infested larva; a single cocoon below, from which adult has issued ; much enlarged. development and kill the caterpillar before it is much more than half-grown. Many of these cocoon-forming species belong to the genus Microgaster, and they are typical of a very large series in the family. The plant-lice-infesting forms frequently belong to the genus Aphidius. As in the previous family, many of these insect


. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Apcuiteles species.—Little mass of cocoons on leaf, replacing an infested larva; a single cocoon below, from which adult has issued ; much enlarged. development and kill the caterpillar before it is much more than half-grown. Many of these cocoon-forming species belong to the genus Microgaster, and they are typical of a very large series in the family. The plant-lice-infesting forms frequently belong to the genus Aphidius. As in the previous family, many of these insects have an external ovipositor. While the preceding series of parasites contain a very fair pro- portion of large species, the next family, Chalcididce^ contains


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1