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REMEDIES. 
Paris green has been used with success by Mr. Quaintance in the 
treatment of this species on beans in Florida, applied at the rate of 
a pound to 150 gallons of water, which is sufficiently strong to destroy 
the larvae. Quicklime should always be added, in the preparation of 
this spray, as it neutralizes the arsenious acids which might otherwise 
be produced when rain follows the spraying. Equal amounts of lime 
and Paris green are the proportions. Arsenate of lead would probably 
be more satisfactory, because not apt to scald the foliage. 
THE PEA MOTH. 
(Semasia nigricana Steph.) 
In New Brunswick, Nova Scotia, and Ontario, in the Dominion of 
Canada, where pea-growing is an important industry, there is, in addi- 
tion to the pea weevil discussed in previous pages, a seed-infesting 
insect known as the pea moth, the larva 
of which develops in ripening peas in 
the pods. This species first attracted 
attention near Toronto, Ontario, in the 
year 1893, and since that time yearly 
complaints have been made of its 
^mn*^ ravages ' 
^^3^^^^^4^fe- DESCRIPTION. 
Fig. 21.— Semasia nigricana Steph.: moth The moth is a small Tortl'ieid. with a 
above larva below-about three times • e se of half an inch The 
natural size (original). fe ^ 
fore-wings are dark fuscous or dusky, 
tinged with darker brown and mottled with white, about as shown in 
figure 21. The hind-wings are nearly uniform, dark fuscous, and bear 
a rather long fringe with an inner line. 
The larva, shown also in figure 21, is whitish-yellow with pale brown 
head and thoracic shield, the latter inconspicuous. Its length when 
mature is about the same as the wing expanse of the moth. The 
tubercular spots are also inconspicuous, and the hairs are short and 
sparse. 
The pupa does not appear to have been described. 
DISTRIBUTION. 
This is a comparatively new importation from the Old World, where 
it has been known for many years as an enemy of the pea. It does 
not appear to affect any other plant, and injuries are most notable on 
late crops. It is practically unknown in the United States, but since 
it is an imported species, there are the best of reasons to believe that 
it will in time invade New England, New York, and other Northern 
States, and pea growers should be warned against it. 
