

THE PEA APHIS WITH GELATION TO FORAGE CROPS. 57 



1900a. Fletcher, James. Injurious insects in Ontario during 1899. In 30th Ann. 

 Rpt. Ent. Soc. Ontario, p. 106-111. 



Page 107. Notice of abundance and injury to field, garden, and sweet peas by Nectarophora 

 destructor. Natural enemies and remedies. 



1900b. Fletcher, James. Report of the entomologist and botanist. In Canada 

 Expt. Farms Rpts. f. 1899, p. 159-204, 23 fig. 



Page 170. Reports injury to garden, field, and sweet peas and vetch by Nectarophora 

 pisi and quotes from letters (dated from July 29 to October) reporting injury. Notes on 

 natural enemies of the pea louse. Remedies. 



1900. Forbes, S. A., and Hart, C. A. The economic entomology of the sugar beet. 

 Univ. 111. Agr. Expt. Sta., Bui. 60, p. 397-532, 97 fig., 9 pi. Also: In 

 21st Rpt. State Ent. 111., p. 83. 



Page 431. 'Nectarophora pisi reported from Illinois. Said to have been found on beets in 

 Nebraska. 



1900. Gibson, Arthur. Notes on insects of the year. Division No. 3, Toronto Dis- 

 trict. In 30th Ann. Rpt. Ent. Soc. Ontario f. 1899, p. 97-98, fig. 60-61. 

 Page 97. Reports injury to sweet and field peas in 1899 by Nectarophora destructor. 



1900. Harrington, W. Hague. Notes on insects of the year. Division I, Ottawa 

 District. In 30th Ann. Rpt. Ent. Soc. Ontario f. 1899, p. 94-96, fig. 58-59. 

 Page 95. Injury to sweet peas in 1899 by Nectarophora destructor. 



1900. Harvey, F. L. Notes on insects and plants. Maine Agr. Expt. Sta., Bui. 61, 

 p. 31-44, March. 



Page 31. Reports much damage to garden and field peas in Maine in 1899 by Nectarophora 

 destructor. 



1900a. Johnson, W. G. The destructive green-pea louse. In Canad. Ent., v. 32, 

 no. 2, p. 56-60, fig. 4-6, Feb. ' 



Description of winged and wingless viviparous females as Nectarophora destructor n. sp. 

 Distribution of the species and its natural enemies. 



*1900b. Johnson, W. G. [Nectarophora destructor John.] In Canner and Dried Fruit 

 Packei, Feb. 15, p. 42. 



Injuries, description, habits, and remedies. 



*1900c. Johnson, W. G. [Nectarophora destructor John.] Circulars Maryland State 

 Hort. Dept. No. 7 (May 12), No. 11 (May 15), No. 13 (May 31), No. 19 

 (June 3). Figs. 

 Describes condition of pest in Maryland and methods being used against it. 



*1900d. Johnson, W. G. The green-pea louse in Maryland. In Amer. Gard., v. 21, 



no. 284, p. 375, June 2. 

 1900e. Johnson, W. G. The destructive pea louse. In Rural New Yorker, v. 59, 



no. 2636, p. 525-526, fig. 178-179, August 4. Also: In Strawberry Cult. 



(The strawberry root louse), v. 7, no. 1, p. 7, August. 

 1900f. Johnson, W. G. Notes upon the destructive green-pea louse (Nectarophora 



destructor John) for 1900. IT. S. Dept. Agr., Div. Ent., Bui. 26, n. s., p. 



55-58, 2 pi. Also: In 31st Ann. Rpt. Ent. Soc. Ontario f. 1900, p. 99-102 

 Destructiveness of the pea aphis, with notes on life history and methods of control. 



1900g. Johnson, W. G. Notes on insects of economic importance for 1900. TJ. S. 

 Dept. Agr., Div. Ent., Bui. 26, n. s., p. 80-84. 

 Page 81. Injuries occasioned by the pea aphis. 



1900. Lugger, O. Bugs (Hemiptera) injivrious to our cultivated plants. Univ. Minn. 

 Agr. Exp. Sta., Ent. Div., Bui. 69, 259 p., 200 fig., 16 pi. Also: 6th Ann. 

 Rpt. State Ent. Minn.- 



Page 201. Brief note on injuries in the East and in Wisconsin to peas by Nectarophora 

 destructor. 



