-9 - 
1921 
males and 2 females that survived were placed on an apple tree 
and increased to at least 142 individuals by the end of summer. 
Emergence was noticeably affected by sudden drops in tempera- 
ture. It is planned to stock the whole of New Zealand within 
2 years, if winter mortality is not too heavy and if satisfactory 
methods of handling are developed. 
Trouvelot, B. (39) 
Observations biologiques sur 1 Habrobracon johansenni Vier. 
Soc. de Biol. ^Paris/ Compt. Rend. 85(35): 1022-1024. 
The adult H. johansenni pierces the body of the larva of the 
potato tuber moth, Gnorimoschema operculella (Zell.^and sucks 
the juice that exudes from the puncture, as does Aphelinus mali 
when attacking Eriosoma lanigerum . 
1922 
Anonymous (40) 
Departmental activities: entomology. So. Africa Dept. Agr. 
Jour. 4(2): 114-117. 
Aphelinus mali still surviving near Pretoria and Ventersdorp 
but will probably not prove of much importance, owing to the 
unfavorable climate. 
(41) 
Departmental activities: entomology. So. Africa Dept. Agr. 
Jour. 4(4): 300-304. 
Aphelinus mali increased in Pretoria in midsummer. Can be 
introduced by transferring a few twigs, but this method may 
spread the San Jose scale. 
Departmental activities: entomology. So. Africa Dept. Agr. 
Jour. 4(5): 399-401. 
Aphelinus mali is apparently established near Pretoria and it 
is hoped that its introduction into Natal will be successful. 
(42) 
