39 
1935 
is kept under control at times by the parasite Aphelinus mali . 
This parasite did not accompany the aphid in its distribution to 
the western part of the country, but its introduction into the Hood 
River Valley of Oregon and the Wenatchee district of Washington, 
resulted in a large measure of control. It was not due to adverse 
conditions that the parasite did not become established earlier. 
Cottier, W. (198) 
Aphides affecting cultivated plants: (4) aphides of the peach, plum, 
and apple. New Zeal. Dept. Agr. Jour. 51(1): 26-31. 
Since the introduction of Aphelinus mali the woolly apple aphid 
has ceased to be a serious pest. 
Deutschmann, F. (199) 
Die Blutlauszehrwespe in Sudm*ahren„ Ztschr. f. Pflanzenkrank. 
45(1): 41-44. 
The author reports his introduction of Aphelinus mali into 
Moravia from Italy in 1933, and states that it has kept the woolly 
apple aphid in check. 
«« 
(200) 
Die Blutlauszehrwespe in Sudmahren. Kranke Pflanze 12(1): 4-6. 
Reports the introduction of Aphelinus mali from Italy into 
southern Moravia in 1933, where it became so abundant that no 
woolly apple aphids were observed in July 1934. 
Jancke, O. (201) 
Ueber den Einfluss einiger Blutlaus-Bekampfungsmittel auf die 
Entwicklung des Blutlausparasiten Aphelinus mali. Arb. 
uber Physiol, u. Angew. Ent. 2(2): 96-98. 
Discusses the results of laboratory tests of sprays upon A. 
mali . Some preparations would completely destroy the aphid 
without harming the parasite. 
Massee, A. M. (202) 
Notes on mite and insect pests for the year 1934. East Mailing 
/Kent/ Res. Sta. Ann. Rpt., 1934(22): 165-172. 
Aphelinus mali , liberated in the spring of 1933, had become 
well established by October 1934 and had spread into adjoining 
orchards. 
