- 5 - 
1913 
Patch, Edith M. (17) 
Woolly aphid of the apple ( Schizoneura lanigera ). Maine Agr. 
Expt. Sta. Bui. 217: 179^ 
Two days quest in the vicinity of Orono early in September 1913 
failed to locate a single woolly apple aphid colony which was not 
well-nigh demolished by Aphelinus mali . 
1914 
Slingerland, M. V., and Crosby, C. R. (18) 
Manual oi fruit insects. 503 pp. Macmillan. New York. 
Aphelinus mali , p. 157. 
1916 
Patch, Edith M. (19) 
Elm leaf rosette and woolly aphid of the apple. Maine Agr. Expt. 
Sta. Bui. 256: 336. 
A revision of Bui. 217 (17). 
1918 
Becker, Geo. G. (20) 
The apple woolly aphis, Eriosoma lanigerum Hausm. Ark. Agr. 
Expt. Sta. Bui. 154: 11. 
Aphelinus mali caused a high mortality of woolly apple aphids. 
1920 
Anonymous (21) 
La lucha contra el pulgon del manzano. /UruguayJ Defensa 
Agr. Bol. Mens. 9: 207-208. 
Preparatory measures are discussed for importing Aphelinus 
mali into Uruguay, where the woolly apple aphid is a dangerous 
pest to fruit trees. 
Schurmann, G. B. (22) 
Informe acerca del Aphelinus mali, parasito que ataca al pulgon 
lanigero. Montevideo Min. Indus. Rev. 8(52): 149-153. 
The author concludes that the benefit from A_. mali in North 
America and France is exaggerated and variable. He hopes to 
introduce it into Uruguay. 
