Insects and Insecticides. 
19 
larva can be found dead under the bushes next morning. Arsenical sprays (3-8) 
may be used either dry or in water, as for other leaf-eating insects. These poisons 
should not be used before the currants are picked. Pyrethrum (24) may bet 
safely used at any time. 
INSECTS INJURIOUS TO THE STRAWBERRY. 
STRAWBERRY LEAF-ROLLER. 
Fig. 13. —Strawberry Leaf-roller: a, larva, nat¬ 
ural size; 6, head end of larva enlarged; c, 
moth about twice natural size; d, tail end 
of larva enlarged. (After Saunders.) 
Remedies. — When the 
fruit has been gathered, scatter 
straw over the vines and burn 
it. Arsenical sprays (3-8) may 
be used, but the worms are so 
protected in the folded leaves 
that it is difficult to get a poi¬ 
sonous dose to them. The 
vines will put up a good growth 
of tops after the burning, if it 
is not done too late. 
[Phoxopteris frag arias .] 
Small brownish or green¬ 
ish larvae attaining a length of 
nearly half an inch and having 
the habit of folding the leaves 
of the strawberry. In these 
folds the larva lives and feeds 
and finally changes to a small 
rust-colored moth with white 
markings on the wings. See 
Figs. 13, 14. 
STRAWBERRY CROWN BORER 
[Tyloderma fragarise.~\ 
A small yellowish 
white grub boring into 
the crown of the plant 
during summer. 
Remedies. — Burning as 
for the preceding species will 
destroy a large proportion of 
the borers. Do not allow the 
plants to become very old, but 
plow frequently as soon as the 
berries are picked and start a 
new bed at some distance from 
the old one. Poisons are of 
doubtful value. 
Fig. 14. —Strawberry leaves showing their appearance 
after being folded by the roller. (After Weed.) 
