Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomolo00smit Year: 1906 392 AN ECONOMIC ENTOMOLOGY. let us have their general life history. In a colony of ants, how- ever large, there is usually a single 'queen,' or female, the nominal head of the estab- lishment, and she attends to the business of laying the eggs, which are white, cylin- drical, and a little elongated. They are taken in charge by the workers, cared for, and in about a nwnth—the time varying with the species—
Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomolo00smit Year: 1906 392 AN ECONOMIC ENTOMOLOGY. let us have their general life history. In a colony of ants, how- ever large, there is usually a single 'queen,' or female, the nominal head of the estab- lishment, and she attends to the business of laying the eggs, which are white, cylin- drical, and a little elongated. They are taken in charge by the workers, cared for, and in about a nwnth—the time varying with the species— helpless grubs are produced. These are carefully tended and fed, because absolutely unable to help themselves, are periodically cleaned and moved about from place to place in the nest, that they may have the proper degree of warmth and dryness or moisture, and after about six weeks of this coddling they are full grown. Then they either spin an oval cocoon, in which they change to pupae, or change directly without forming such a cov- ering. The cocoons are cared for as tenderly as were the larvae themselves, and these are what is usually known as ' ants' eggs.' They may be found at midsummer, or thereafter, in almost any colony of ants, and usually in the upper chambers of the nest, where they get a full supply of warmth from the sun. The adults hatch from these cocoons late in summer, and at once take part in the work of the nest, so far as they are workers. Of the latter there may be two *brms, known as 'worker minors,' or small workers, and ' worker majors,' or large workers, each with different duties. Creviastogastcf Imi'olata. — a, b, large worker ; c, its head ; ci, female ; <?, its wing ; /, small worker. Family Formicidcv.
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