Bryan morning eagle. [volume] (Bryan, Tex.) 1898-1909, 1907-03-19


Number Of strsws In Each Bundle.
ropean state and has also found rs
way into most OF the important wheat
producing regions Of the world. II 70
found over most OF North America.
where wheat Ia grown. from Texas
10 the far northern fields OF British
America. In our opinion Il is capable
Of adapting itself TO almost all vicissi'
tudes OF climate that are not uncon-
genial to It's host plants. The terri
tory In North America over which II
has spread by natural diffusion lies
In n solid block. and we believe the
boundaries OF this infested area VIII
be further enlarged by extension In
every direction 20 long as host plants
are available. An exception 70 this
general rule OF diffusion may posAbly
be found In restricted districts where
excessive drouth prevails AZ seasons
not prohibitive OF wheat production.
but probably affecting vital periods In
the life history OF the ny.
The adult female IL small. dark
colored ny. about one-tenfh OF A inch
long. possessed OF two wings. and
looks like a small mosquito. When
first hatchcd. the reddish colored alb
domen. distended with eggs. empha-
sizes the stimulation Of the insect to
q small mosquito. filled with blood
The male Is smaller and more slender
than the female. darker In appearance.
and has longer and more conspicuous
whorls OF hair on the antennae.
The egg Is about one-fftieth OF an
inch long and oneseventh as wide ~
long, the ends being smoothly round
ed. The surface Is smooth and shin
ing. the color passing from thin. trans
lucent. honey yellow. when newly laid.
through orange yellow to reddish ~
Matching time approaches.
Under normal conditions the eggs.
minute. orange-reddish. elongated
specks, barely visible TO the unaided
eye, are laid In the longitudinal
creases or burrows on the upper sur
face, especially where the leaves are
turned bottom side upward. Again
they are deposited on the stalks or just
between the stalk and the sheathing
base OF the leaf In confinement the
female will deposit on almost any
plant available OF. n no plant 10 ct
hand. on the sides OF the enclosing yes
sci or In the dirt at the bottom OF the
same.
When newly Matched. the young
larys n reddish In color. slightly larger
than the egg anS. when observed
through . good microscope. 10 seen to
be composed Of 10 sesments. II starts
Il once down the leaf. following the
groove or crease In which It Matched.
or an adjacent one. until II reaches
the base: from this point II burrows
between the leaf sheath and the stalk
until II reaches the foot OF the culm.
close 10 the root In the case OF fall
wheat. and Just above the FIRST. second
or third Joint In case of spring wheat.
While on this downward journey.
which may occupy several hours. the
Young iarva IL easily detected from
It's court by dirt particles or mechan'
icai distractions. and may lose III
hold and fall to the ground. or may
die and In a dried and shrivellcd con
dition remain for a time on the leaf
Il seems improbable that larva. once
on the ground. can survive to reach
Its normal position on wheat plant
At . very early period II was no
ticcd In the United States that some
varieties Of wheat seemed TO suffe'
/ less from Hessian ny than others. ap
pArsntly grown under the same condi