. Transactions - American Philosophical Society. s ^3. J\ f .A ^ . 4 ^i - -T^ ARTICLE III. On the Cecidomijia Destructor, or Hessian Fhj. By Miss M. H. Morris. Read Oct. 2, 1840. : The enormous injury to which the wheat crops in the United States havebeen, for many years, subjected by the Cecidomyia Destructor, or Hessian Fly,induced me to study, minutely, the habits of the insect, with a view to discoversome remedy for the evil. Having ascertained that the perfect fly appears inJune, and lives but a few days, and that the larva is only to be found in theyoung wheat, in the succeeding fall, or
. Transactions - American Philosophical Society. s ^3. J\ f .A ^ . 4 ^i - -T^ ARTICLE III. On the Cecidomijia Destructor, or Hessian Fhj. By Miss M. H. Morris. Read Oct. 2, 1840. : The enormous injury to which the wheat crops in the United States havebeen, for many years, subjected by the Cecidomyia Destructor, or Hessian Fly,induced me to study, minutely, the habits of the insect, with a view to discoversome remedy for the evil. Having ascertained that the perfect fly appears inJune, and lives but a few days, and that the larva is only to be found in theyoung wheat, in the succeeding fall, or spring, I was led to infer that the grainitself was the nidus selected, not the culm, as Mr. Say had supposed. The fact of the egg being laid in the grain does not, however, rest upon in^ference; I have actually detected the larva in the grain, when peculiar circum-stances had prevented it from leaving its birth-place, in order to ascend thestalk, as it is prone to do. While I admit the correctness of Mr. Says description of the Cecidomyia,given in
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