The Canon City record with which is consolidated the Canon City cannon., 1913-02-27

Mr.. George +. weldon, deputy stato
entomologist. who made recent visit
10 Canon City and who defined and
explained The Pest District Law"
10 the fruit growers at a special meet
ing Of The Fremont County Horticul-
tural Society on Saturday, gives out
the following information for the fruit
growers of this vicinity:
The leaf-roiler. the great enemy
Of the fruit growers OF the Canon City
district, should be and is going to be
Killed OF and in order to combat this
unrelenting pest n better knowledge
OF its habits and its life should be
shown. For this reason the following
facts have been gathered together.
The Leaf.R Roller Egg.
The female moth deposits her eggs
IN compact oval clusters OF about
twenty-five to more than one hundred
anywhere upon the bark Of the fruit
trees that serve as its food supply.
Th eggs are distributed anywhere
from the bases OF the trunks OF the
trees to the tips of the twigs, or at
least to the limit of the previous years
growth. These clusters commonly
vary little from one-eighth Of an inch
IN width to three or three and one
half sixteenths OF an inch in their
greater diameter. and the clusters arc
more or less oval in outline. As soon
As the egg mass has been deposited.
the female moth smears the eggs over
With an impervious material which IS
thrown out from the extremity OF the
abdomen, and which projects the eggs
from the inclemencies OF the weather
and the attacks of predaceous insects
for nearly ten months. or until the
buds begin to open the following year.
SO there is but one brood of the worms
each summer.
when freshly deposited. the egg
patches are greenish-yellow in color.
but soon become much darker on ex-
posure to the sunlight. until they I'M
itate very closely the color of the
bark upon which they rest. Before
spring many OF the patches become
bicached to a light-gray color, while
others remain quite dark. The moths
ored from the light and dark egg
patches do not know any differences
IN their markings or coloration. The
eggs are stuck SO tightly TO the bark
when they are deposited that they oft
sn remain for several years. The old
egg patches are readily recognized Sy
the numerous small punctures from
which the larvae or worms escaped.
The Larvae or Worms.
The larvae do not all hatch At
snce. those in the warmer situations
being the first to emerge. and those
coming from single egg patch usual
BY vary several days in their date of
emcrgence.
THE date OF Matching is by no
means constant, but is determined W
al. m rlIu aus or fatanaao af Tho aa..o,,
exactly as is the time for the opening
Of the buds. The earliest Of the larvae
emerge with the first bursting OF tn
buds OF the apple trees. and when the
blossom buds of the apple begin %
show their pink color the larvae of
the leaf-roiler have mostly Matched.
The active Matching season is usually
distributed over about one week to
ten days. the time varying with the
temperature. II the days and nights
are cool, the period lasts longer than
n Matching takes place at a time when
the days and nights are warm.
AT first the larvae are very small,
hardly one-sixteenth of an inch in
length. and dull greenish-yellow IN
color, with black heads. As they feed
and grow. they become deeper green
in color. and the black head and first
segment Of the body become quite
conspicuous.
The larvae usually require from