752 REPORT OF THE ENTOMOLOGIST OF THE 
Conclusion.— This moth will not be apt to be injurious to 
cabbage on Long Island next year. It is probably three brooded 
in this locality. Thorough treatment of cabbage with the 
arsenites for the cabbage moth and the cabbage butterfly will 
prevent any unusual outbreak of the cabbage Plutella. 
CABBAGE APHIS. 
Aphis brassice, Linn. 
(Ord. Hemrprera: Subord. Homoprzrra: Fam. Apurpip2.) 
Probably there is no better known cabbage pest than the cab- 
bage aphis, also known as cabbage louse and “greenfly.” This 
pest has done as much or more damage on Long Island the past 
season than the cabbage caterpillars, that is, estimating the dam- 
age from early spring till late fall. Mr. J. M. Lupton, of Matti- 
tuck, who is an extensive grower of garden seeds, states that it 
caused a large amount of damage to seed cabbage by injuring the 
seed stalk so that in some places no seed was produced. Mr. Van , 
Dergau, of Queens, made the same complaint. It also caused con- 
siderable damage to cabbage in the seed beds. 
Many heads of the last two crops of cabbage were actually 
filthy from the masses of lice on them. It was not an uncommon 
sight in cabbage fields to see heads with the outside leaves dead- 
and covered with the inflated skins of what had been parasitized 
aphids; above this would be afew half-dead leaves covered with 
about an equal number of parasitized and live aphids, while 
within the withy head would be masses of perfectly healthy 
lice. 
This was especially true of the Savoy varieties. Some garden- 
ers seem to have the idea that this variety of cabbage is freer 
from insect injury than other kinds. Observations the past fall 
would indicate that this is simply due to appearances and not — 
fact. Plant lice curl the leaves of all cabbage more or less. The 
Savoy variety furnishes a natural protection to them. It natur- 
ally follows, though, that any variety which forms a solid head 
rapidly, if given half a chance, will have the advantage over slow 
heading varieties. 
