Butler citizen. [volume] (Butler, Pa.) 1877-1922, 1892-01-15

west In the west Il Is reported more
frequently from Illinois Missouri.
Iowa, Nebraska and KanssA In most
of which states the soft maple 10 In.
digenous, a fact which accounts for the
excessive multiplication Of the inject
there as compared with the more east.
ern sections of the country. Il leeds
on other naples and presumably on all
species of the genus Acer. and when
forced to from necessity will feed on
oak, though nominally never found ON
that genus Of trees and probably in
capable of full development thereon.
The eggs are deposited by the parent
moth in patches of thirty and upwards
on the under side of leaves. The egg
is about 0. 05 of an inch long. su6oval
slightly fattencd, pal. grecnish, be-
coming yellowish. and showing tho
black head of the inclosed larv@ just
before Matching. and Ia hatched In
eight or nine days after being depos-
tied.
The larvB undergo four rnolts and
reach full growth in about month.
when they enter the ground and trans
from to pup1. The worms (c) sre long
itudinally striped with pale and dark
green lines, and are chiefly distin-
guished by two anterior projecting
black horns on the second segment, and
by having segments 10 and II little
dilated and rose-colored at the sides
The pupa (b) is of deep brown or
black color. very much roughened and
armed with curved horns and points
about the anterior extremity and nlso
on the last joint, which terminates In .
long forlsed projection. The pups OF
the first brood give forth the perfect
insect in fourteen to sixteen days, those
of the second brood usually wintering
over in the ground. In the west there
are usually but two broods In the year.
but three broods are occasionally pro-
duced. The pupa, before giving out
the image. works its way TO the sur
face by the aid of its sp!nes, allow.
ing the ready escape OF the moth The
moth is of a pale yellowish color shaded
with pink. as in the figure (cI which
represents the female. The malc has
a smaller abdomen and broad comb-Iiks
antennm. Different specimens vary
greatly-the yellow predominatinR In
western and the rose-color In eastern
specimens, while others again, cspeci-
ally from the west are nearly white
Parasitic insects very effectually aid
in the control of the worms, which in
fact seldom occur two years In susces-
sion in injurious numbers Spraying
with paris green or London purple In
the proportion of one pound to i2s TO i5o
gallons of water, m soon rs the young
larvm are noticed, or a week or ten days
after the moths appear In the spring.
is at once the simplest and most eject
i've remedy. II the larv1 have been Al
lowed to reach full growth 30 that
spraying will be Of no use, great num-
bers of them can be entrapped and
easily destroyed, by digging trench
either around the individual trees or
around the groves or belt. Tho trench
should be ut least foot deep, with the
outer wall sloping under. The larva
usually wander from the trees before
entering the ground. and will collect
In numbers in the trench or bury them
selves in the bottom, and msy then be
easily killed. Their numbers may b
reduced also by keeping sharp look
out for the moths and eggs during ths
latter part of May. when both may Be
destroyed in large quantities --0rsngs
T,x1d Enru,or