THE PEA APHIS WITH RELATION TO FOE AGE CROPS. 61 



1903a. Felt, E. P. Importance of injurious insects introduced from abroad. In 

 Report of the State entomologist on injurious and other insects of the State 

 of New York for 1902 (N. Y. State Mus. Bui. 64). p. 116-126. 



Page 122. Mentions Nectarophora pisi as an introduced species responsible for losses to 

 pea growers in the Atlantic States. 



*1903b. Felt, E. P. Importance of injurious insects introduced from abroad. In 

 Proc. Soc. Prom. Agr. Sci., 24th Ann. Meet., p. 39-18. 

 1903. Fletcher, James. Report of the entomologist and botanist. Canada Expt. 

 Farms Rpts. f. 1902, p. 169-201, 5 fig., 1 pi. 



Page 179. Brief account of the destructive pea aphis. Worst attack the past season was 

 on grass peas, hairy vetch, and field peas. 



1903. Quaintance, A. L. Entomological notes from Maryland. U. S. Dept. Agr., 

 Div. Ent., Bui. 40, p. 47-50, fig. 2. 



Page 49. Nectarophora pisi was not injurious to peas past season (1902). Growers practice 

 early planting to avoid injury. 



1903. Smith, J. B. Report of the entomologist. N. J. Agr. Expt. Sta. Rpt. f. 1902, 



p. 425-508, 13 fig. 

 Page 425. Reports absence of pea louse in 1902, except on very late peas. 



1904a. Britton, W. E. Third report of the State entomologist. Conn. Agr. Expt. 

 Sta. Rpt. f. 1903, pt. 3, p. 199-286, fig. 27-42, 8 pi. 



Page 212. Nectarophora pisi less abundant in 1903 than in 1902, though some injury to 

 late peas. 



1904b. Britton, W. E. Insect notes from Connecticut. U. S. Dept. Agr., Div. 

 Ent., Bui. 46, p. 105-107. 

 Page 105. Nectarophora pisi less abundant than in 1902, but many late peas were injured. 



*1904. Felt, E. P. Pea louse. In Country Gent., v. 69, no. 2673, p. 369, April 21. 



Methods of controlling Nectarophora pisi. 



1904. Fletcher, James. Insects injurious to Ontario crops in 1903. I?i 34th Ann. 



Rpt. Ent. Soc. Ontario f. 1903, p. 62-71, fig. 22-26. 

 Page 64. Reports injury to field and grass peas by the pea aphis. 



1904. Pergande, Theo. On some of the aphides affecting grains and grasses of the 

 United States. IT. S. Dept. Agr., Div. Ent., Bui. 44, p. 5-23, 4 fig. 



Page 21. The clover plant louse Macrosiphum trifolii is here described as new. Reports 

 what he considers same species from wheat ( Triticum vulgare), oats (Avena sativa), red clover 

 ( Trifolium pratensis), strawberry, sow-thistle (Sonchus oleraceus), and dandelion ( Taraxacum 

 dens-leonis). 



1904-1906. Sanborn, C. E. Kansas Aphididae with catalogue of North American 

 Aphididae and with host-plant and plant-host list. Pt. I-II. In 

 Kans. Univ. Sci. Bui., v. 3, no. 1, p. 1-82, 22 pi., July, 1904, and v. 3, 

 no. 8, p. 225-274, April, 1906. 



Describes winged viviparous female of Macrosiphum pisi and reports taking it on rose. 

 In the host plant catalogue the following hosts of Macrosiphum pisi are given: Capsella 

 oursa-pastoris , cultivated beet, Lathyrus odoratus, cultivated pea, Pisum sativum, Spiraea 

 ulmariae, Trifolium repcns, Urtica gracilis, and TJrtica dioica. 



1904. Sanderson, E. D. Insects of 1903 in Texas. U. S. Dept. Agr., Div. Ent., 

 Bui. 46, p. 92-96. 

 Page 96. Reports injury to garden peas in Texas by Nectarophora pisi. 



1904. Smith, J. B. Report of the entomologist. In Rpt. Ent. Dept. N. J. Agr. Col. 

 Expt. Sta. f. 1903, p. 557-659, 32 figs. 

 Page 563. Late peas were badly infested with the pea-louse. 



