- 57 
1944 
Michelbacher, A. E., and Borden, A. D. (290) 
Two introduced insects attacking the woolly apple aphid in 
California. Jour. Econ. Ent. 37(5): 715-717. 
Reports the introduction of Aphelinus mali into the Watsonville 
district of California from material supplied by E. J. Newcomer, 
of the Bureau of Entomology and Plant Quarantine, Yakima, Wash. 
1945 
Massee, A. M. (291) 
Overwintering of the woolly aphid parasite ( Aphelinus mali Hald.) 
in low-temperature apple stores. East Mailing ^KenfJ Res. 
Sta. Ann. Rpt. 33(1945): 142-143. 
A. mali introduced into England may die out, owing to damp 
winters, therefore tests were made to carry it over winter in 
cold or dry storage. Cold storage was successful, but dry 
storage failed. Collecting the parasite in October, keeping it 
at a constant temperature of 39° to 46° F. until the end of May, 
and then allowing it to emerge in infested orchards was satis- 
factory. 
Smith, J. Harold (292) 
Useful parasitic insects. Queensland Agr. Jour. 61(6): 340-351. 
(Biol. Abs. 20: 1, 751.) 
Aphelinus mali listed as one of the beneficial insects. 
1946 
Mason, F. R. (293) 
/Woolly aphid parasite^y Palestine Dept. Agr. and Fisheries 
" Ann. Rpt., 16 pp., March 31, 1945. 
Eriosoma lanigerum is successfully controlled by Aphelinus 
mali . 
Newcomer, E. J., Dean, F. P., and Carlson, F. W. (294) 
Effect of DDT, xanthone, and nicotine bentonite on the woolly 
apple aphid. Jour. Econ. Ent. 39: 674-676. 
Prior to .the introduction of Aphelinus mali , the woolly apple 
aphid was a serious pest; now it is relatively insignificant. The 
use of DDT, however, for codling moth control appears to 
interfere with the normal activity of the parasite, resulting in 
a serious increase in aphid population. 
