142 MISCELLANEOUS PAPERS. 



1894. Sempers, F. W. — Injurious insects anil the use of insecticides.' <Plii]a- 

 delphia, Pa., p. 157. 



Short account of the corn root-aphis, with remedies. " No artificial remedy 

 is IjQown for this pest. In small garden patches kerosene emulsion might be 

 used for drenching about the roots, but treatment with this insecticide has 

 not been regarded as practicable on a large scale." 



189.5. CoMSTOCK, John Henry, and Comstock, Anna P>otsford. — Manual for 

 tlie Study of Insects. <Itbaca, X. Y., p. 1.58. 



Mentions dependence of root-aphis upon ants as given by Forbes. 



1896. Forbes, S. A. — Insects injurious to the seed and root of Indian corn. 

 <I11. Agr. Exp. Sta., Urbana, Bui. 44, pp. 237-257, tigs. 33-37. 



Largely a recapitulation of the account given in the Eighteenth Report of 

 the State Entomologist of Illinois. 



1S96. Smith, J. B. — Economic entomo]ogj\ < Philadelphia, Pa., p. 1.34. 



Mentions the corn root-aphis and methods to he used against it. 



1896. Hopkins, A. D., and Rumsey, W. E. — Practical entomology. <W. Va. 

 Agr. Exp. Sta., Charleston, Bui. 44, p. 279. 



Short and general account of the life history of Aphis maUli-radicis. It 

 was found to be exceedingly common and destructive to corn in Jackson, 

 W. Va., in May, 1891. Remedies are given. 



*1898. Webster, F. M. — Entomology. <Ohio Farmer, Cleveland, Ohio, Septem- 

 ber 1, 1898, p. 143. 



Notes on Aphis maidi-radicis. 

 3899. King, Geo. B. — China asters infested by a coccid. <Psyche, Cambridge, 

 Mass., VoL VIII, p. 312. 



Reports that Aphis mnidi-rndicis is found on roots of asters in Massachu- 

 setts. 



1900. Lugger, O. — Bugs injurious to cultivated i»lants. <Minn. Agr. Exp. Sta., 

 St. Paul, Bui. 69, pp. 184-185, fig. 154*. 



Quotes Osborn in regard to the corn root-aphis. 



1900. Smith, J. B.— Insects of New .lersey. < Supplement to Twenty-seventh 



Ann, Rep. State Board Agr. N. J. for 1899, Trenton, p. 104. 



Lists Aphis mnidis Fitch and speaks of it as often causing serious injury' 

 to the young plants by its attacks on the roots. 



1901. Bruner, L. — Corn-root insects. < Nebraska Farmer, Lincoln, Nebr., Feb- 



ruary 14, 1901, figs. 



General account of the life history of the corn root-aphis, with suggested 

 remedies. 



1901. Hunter, W. D.— The AphididtT? of North Anierica. <Ia. Agr. Exp. Sta., 



Ames. Bui. 60, pp. 98-99. 



Lists Aphis maidi-rndicis from Iowa; gives other States in which it is 

 found ; food plants and bibliography of literature. 



1901. Sanderson, E. D. — The corn root-louse. <Twelfth Ann. Rep. DeL Agr. 



Exp. Sta. for 1900, Wilmington, p. 211. 



Sweet and sugar corn worse affected than field corn. Aphides common on 

 weeds early in the season and wei'c found on squash roots in June. 



1902. Sanderson, E. D. — Insects injurious to staple crops. <New YArk, N. Y., 



pp. 1.34-141, figs. 74-76. 



The corn root-louse (Aphis ludidi-nidicis Forbes). A general description 

 of the aphis; distribution; food habits; life history; care by ants; remedies. 



