Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . of the insects, andgrain sown after the 15th or 20th of May. in New England,,will generally escape their attacks. The wings of the Hessian-fly are blackish; those of the are transparent. This last species is orange colored, withlong, slender, pale yellow legs, and the joints of the antennaare twenty-four in number in the male, and twelve in the fe-male. The Cecidomyia rig idee Osten Sacken (C. salicis Fitch) formsa gall surrounded by th
Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists . of the insects, andgrain sown after the 15th or 20th of May. in New England,,will generally escape their attacks. The wings of the Hessian-fly are blackish; those of the are transparent. This last species is orange colored, withlong, slender, pale yellow legs, and the joints of the antennaare twenty-four in number in the male, and twelve in the fe-male. The Cecidomyia rig idee Osten Sacken (C. salicis Fitch) formsa gall surrounded by the dry and brittle terminal bud at theend of the twigs of the willow. The single larva discloses thefly early in the spring. The bright yellow larva of (\ grossn-larice Fitch, causes the gooseberry to turn red prematurely andbecome putrid. The pupa of C. pini-inopis is supposed byOsten Sac-ken to be coarctate, the larva fastening itself to apine leaf and remaining motionless until the resinous exuda-tion resulting from its attacks hardens, forming a cocoon-likepupa case or pnparium. Mr. AValsh describes in the • American Entomologist, vol. i,. CECIDOMYIlXi;. «77
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishe, booksubjectinsects
