An introduction to agriculture . s the petalsof the apple blossoms fall^ or later, if it is the secondgeneration. The larvae hatch, eat their way into the young apple, whichmay soon fall, if itharbors the first gen-eration. Afterwardsthe larvse work theirway out of the appleand crawl into a crev-ice of the bark of thetree or similar place,from which thevemerge as adult in-sects. The larva isthe white worm so fa-miliar in apples,often called the ap-ple worm. The canher wormis found on fruit and shade trees. The adult is a smallash-colored moth, the female of which is wingless. Thelarva is often
An introduction to agriculture . s the petalsof the apple blossoms fall^ or later, if it is the secondgeneration. The larvae hatch, eat their way into the young apple, whichmay soon fall, if itharbors the first gen-eration. Afterwardsthe larvse work theirway out of the appleand crawl into a crev-ice of the bark of thetree or similar place,from which thevemerge as adult in-sects. The larva isthe white worm so fa-miliar in apples,often called the ap-ple worm. The canher wormis found on fruit and shade trees. The adult is a smallash-colored moth, the female of which is wingless. Thelarva is often called the measuring worm because of itsmethod of traveling by looping its body. The eggs arelaid in patches on the bark of a tree. The larvse willstrip the foliage of the tree with great rapidity. Afterthe worms have matured, they swing themselves down bya silken thread, burrow in the ground, and there go intothe resting state. The last brood stays in the groundover winter. The cahhage worm is the larva of the well-known white. CODLIXG MOTH a, the entrance hole: h, the burrow; c,the larva; d, the pupa; e, moth at rest; /,moth with wings spread; r/, head of larva;h, cocoon containing pupa. PLANT E] 14a cabbage butterfly. It is greenish white iu color, taper-ing at each end, and covered with fine white down. Theeggs are laid on the leaves of the cabbage and similarplants. In ten days they hatch, and the larvae feed onthe leaves about three weeks. The resting stage of thefirst brood lasts about two weeks and the brood is gen-erally hatched in May. The second brood is hatched inJuly. The potato beetle is well known. In the CentralStates there are generally three broods, the last one re-maining in the ground over the winter in the restingstage. The larvae of the two broods feed about twentydays each, and remain quiet in the ground ten or twelvedays. This insect is discussed more fully in ChapterXII. Some Common Sucking Insects.— Examples of suck-ing insects are: — Plan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
