1921 
Anonymous (29) 
El enemigo del pulgon del manzano. Travajos para su aclimatacion. 
/Uruguay/ Defensa Agr. Bol. Mens. 2(2): 39-41. 
All the specimens of Eriosoma lanigerum imported from the 
United States were dead upon arrival, but from this material 
some living hymenopterous parasites, believed to be Aphelinus 
mali , have been obtained. 
(30) 
Laboratoire de phytopathologie. Soc. Soi. Nat. du Maroc. 1(1): 
22-27. 
The woolly apple aphid in Morroco is not sufficiently abundant 
to justify the introduction of Aphelinus mali. 
(31) 
Rapports sommaires sur les travaux accomplis dans les 
laboratoires et comptes rendus des missions d'etudes. 
Ann. des Epiphyt. 7(1919-20): 421-441. 
Aphelinus mali introduced against Eriosoma lanigerum . 
Hitier, H. (32) 
Un parasite du puceron lanigere. Jour. d'Agr. Prat. 36(30): 101. 
Attention has been directed for some time toward finding a 
parasite of E. lanigerum , which is so destructive to apple trees 
in France. Aphelinus mali has been introduced in small numbers 
from America, and has been very carefully propagated in special 
cages at various entomological stations. Results have been en- 
couraging. Too much must not be expected, however, as the 
multiplication of the parasite in spring is slower than that of E. 
lanigerum ; later in the season its activities may be of great 
benefit. 
Marchal, P. (33) 
Introduction en France de 1 Aphelinus mali Haldemann, parasite 
du puceron lanigere. Rev. de Zool. Agr. et Appl. 20(7): 65-70. 
A. mali , the chalcid parasite of Eriosoma lanigerum Hausm. , 
has been imported from America and successfully established 
in various districts in France. Its general distribution over the 
country is considered only a matter of time. Under natural con- 
ditions hibernation occurs in the larval or pupal stage within the 
host larva. During 1921 the first adults emerged toward the end 
of March. 
oci'-cq n 
