152 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 16 
Chairman E. N. Cory: Mr. E. R. Sasscer will give the next paper 
on the program. 
IMPORTANT FOREIGN INSECTS COLLECTED ON IMPORTED 
NURSERY STOCK IN 1922 
By E. R. Sasscer 
Abstract 
This paper is primarily a summary of the more important insects intercepted on 
foreign nursery stock arriving in the United States in 1922. A more or less com¬ 
plete list of the insects and plant diseases intercepted on foreign plants and plant 
products during the calendar year 1922 will be issued in the near future by the 
Federal Horticultural Board in the form of an Annual Letter of Information. This 
letter will list the insects by the country of origin, and will also indicate the hosts. 
It is obvious from the partial list of insects which follows, that the 
condition of plants and plant products, as regards insect infestation, 
has shown little, if any, improvement over past years. 
The sorrel Cutworm, Acronycta rumicis L., was intercepted on four 
shipments of fruit and rose stocks from France, and 156 nests of the 
White Tree Pierid, Aporia crataegi L., were taken on shipments of fruit 
and rose stock arriving from France. As previously indicated 1 , litera¬ 
ture fails to record this insect as being established in the United States. 
Also, two shipments of fruit stocks from France bore nests of the Brown 
Tail Moth, Euproctis chrysorrhoea L. Emphytus cinctus L., arrived on 
26 separate shipments of Manetti stocks as follows: England 8, France 
10, Holland 5, Ireland 3, and the Oriental Fruit Moth, Laspeyresia mo- 
lesta Busck, and L. pomonella L., were found in shipments of pear from 
Japan and apple from New Zealand, respectively. The eggs of the 
European Lackey Moth, Malacosoma nuestria L., were intercepted on 
two shipments of fruit stocks from France. 
White Flies were intercepted on a number of occasions as follows: 
The Citrus Black Fly, Aleurocanthus woglumi Ashby, was intercepted 
on foliage of plants arriving either as ships’ stores or passengers’ bag¬ 
gage: Cuba 5, Jamaica 4, Nassau, Bahama Islands 3, on Citrus sp., 
Coffee, Jasmine, Avocado, and Stephanotus sp., from Cuba; on Lime, 
Grapefruit, Mango, and Papaya from Jamaica; and on Sapodilla, 
Canipe, and spice from Nassau, Bahama Islands. The Woolly White 
Fly, Aleurothrixus howardi (Quaint.), was taken on five occasions on 
citrus foliage from Cuba and once on banana from Porto Rico; and 
Cardin’s Whitefly, Aleurodicus cardini Back, was taken on guava 
arriving from the same island. Lithraea caustica from Chile was infested 
Ur. Ec. Ent., Vol. XV, No. 1, p. 120 (1922). 
