34 BULLETIN 805, U. S. DEPARTMENT OF AGRICULTURE. 



bers of this species. Xo parasites have been reared from eggs of the 

 apple leafhopper. 



A single spraying with 40 per cent nicotin sulphate at the rate of 

 1-1,500 combined with soap will so materially check an infestation by 

 the apple leafhopper when applied against the first-brood nymphs 

 that injury caused later by those that escape will be of little conse- 

 quence. The same treatment made three or four weeks earlier is 

 effective against the rose leafhopper, though this species is seldom 

 injurious enough to justify a special application. 



LITERATURE CITED. 



THE APPLE LEAFHOPPER. 



(1) Le Baron, W. 



1S53. Observations upon two species of insects injurious to fruit trees. In 

 The Prairie Farmer, Sept., p. 330-331. 



(2) Walsh, B. D. 



1862. Entomological note. In The Prairie Farmer, Sept., p. 148-149. 



(3) Berg, C. 



1879. Hemiptera Argentina. Enumeravit Speciesque Xovas. p. 273. 



(4) Forbes, S. A. 



1SS3. The green apple leafhopper. In 13th Rept. State Ent. 111., p. 1S1-183. 



(5) 



1886. Proceedings of the Entomological Club of the A. A. A. S. In Ent. 

 Arner., v. 2, p. 173-174. 



(6) WoODWORTH, C. W. 



1889. North American Typhlocybini. In Psyche, v. 5, p. 211-214. 



(7) Gillette, C. P. 



1890. A few injurious insects and their remedies. In Trans. Iowa Hort. 



Soc, v. 25, p. 102-106. 

 (S) Osborx, H. 



1S96. A new pest of potatoes. In Iowa Agr. Coll. Exp. Sta. Bui. 33, p. 603-605. 

 (9) Gillette, C. P. 



1898. American leafhoppers of the subfamily Typhlocybinae. In Proc. 

 "T. S. Nat. lies., v. 20, no. 1138. 



(10) Forbes, S. A. 



1900. The leafhoppers. In 111. Agr. Exp. Sta, Bui. 60, p. 410-427. 



(11) Washburn, F. L. 



1903. A destructive leafhopper. In Eighth Rept. State Ent. Minn ., p. 148- 

 151. 



(12) Britton, W. E. 



1905. The apple or currant leafhopper, Empoasca mali Le B. In Fourth 

 Rept. Sta. Ent. Conn., 1904, p. 216. 



(13) Brues, C. 



1905. Report of the State Xursery Inspection. In 22d Ann. Rept. Agr. Exp. 

 Sta. Univ. Wis., p. 322-329. 



(14) Webster, R. L. 



1908. The eggs of Empoasca mali Le B. In Jour. Econ. Ent., v. 1, p. 326-327. 



(15) Washburn, F. L. 



1908. Two years' work with the apple leafhopper. In Minn. Agr. Exp. 

 Sta. Bui. 112, p. 14-5-164. 



